IronScheme fails test suite

[christoff-buerger]

IronScheme (version 115672, 20th November 2015) fails the following test cases of RACR's test suite:

• tests/ast-construction.scm
• tests/patterns.scm
• examples/state-machines/state-machines.scm
• composed-petrinets/examples/purchase-processing.scm
• composed-petrinets/examples/runtime-structure-example-slide.scm
• composed-petrinets/examples/syntax-tests.scm

  tests/ast-construction.scm, tests/patterns.scm and composed-petrinets/examples/purchase-processing.scm:

Unhandled CLR exception during evaluation:
()

examples/state-machines/state-machines.scm:

Unhandled CLR exception during evaluation:
CLR Exception: System.InvalidProgramException
System.InvalidProgramException: Invalid IL code in eval-core(013):::run-tests (): IL_0052: call      0x0a00000a

  at eval-core(013).$77 () <0x3979a08 + 0x0068b> in <filename unknown>:0 
  at IronScheme.Scripting.ScriptCode.Run (IronScheme.Scripting.CodeContext codeContext, Boolean tryEvaluate) <0x38b5e58 + 0x000c6> in <filename unknown>:0 
  at IronScheme.Scripting.ScriptCode.Run (IronScheme.Scripting.ScriptModule module) <0x38b5db0 + 0x0008b> in <filename unknown>:0 
  at IronScheme.Runtime.Builtins+<>c__DisplayClass11.<CompileCore>b__b () <0x38b5d78 + 0x0002f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x388b848 + 0x0002c> in <filename unknown>:0 
  at #.psyntax.expander::compile-r6rs-top-level#anon#1#2$2586 (IronScheme.Scripting.CodeContext $context) <0x3950b00 + 0x0008b> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x388b848 + 0x0002c> in <filename unknown>:0 
  at #.psyntax.main::load-r6rs-top-level#1#anon#1#2#3#4#5#6$2628 (IronScheme.Scripting.CodeContext $context) <0x39007a0 + 0x00057> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x388b848 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.exceptions::dynamic-wind (System.Object in, System.Object proc, System.Object out) <0x3892f28 + 0x0017b> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x388b848 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.exceptions::dynamic-wind (System.Object in, System.Object proc, System.Object out) <0x3892f28 + 0x0017b> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object[] args) <0x3838b20 + 0x001ec> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+VarArgClosure.Call (System.Object[] args) <0x3838938 + 0x0018e> in <filename unknown>:0 
  at #.psyntax.main::load#1$2602 (IronScheme.Scripting.CodeContext $context) <0x38fdc80 + 0x000f0> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x388b848 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.exceptions::with-exception-handlers#1#anon#1$1779 (IronScheme.Scripting.CodeContext $context) <0x38fdc18 + 0x0004b> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x388b848 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.exceptions::dynamic-wind (System.Object in, System.Object proc, System.Object out) <0x3892f28 + 0x0017b> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x3857478 + 0x00036> in <filename unknown>:0 
  at IronScheme.Runtime.Builtins.CallWithCurrentContinuation (System.Object fc1) <0x38fd230 + 0x00106> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x388b848 + 0x0002c> in <filename unknown>:0 
  at IronScheme.Runtime.R6RS.Exceptions.WithClrExceptionHandler (System.Object handler, System.Object thunk) <0x38fd0e8 + 0x00049> in <filename unknown>:0 

composed-petrinets/examples/runtime-structure-example-slide.scm:

Stack overflow in unmanaged: IP: 0x272969, fault addr: 0xb02a2fec
Stack overflow in unmanaged: IP: 0x95f7b8c7, fault addr: 0xb02a1ffc
Stack overflow in unmanaged: IP: 0xb47dc, fault addr: 0xb02a098c
Stack overflow in unmanaged: IP: 0x95f78a41, fault addr: 0xb02a2fdc
Stack overflow in unmanaged: IP: 0x95f798e1, fault addr: 0xb02a1ffc
Stack overflow in unmanaged: IP: 0x95f798c6, fault addr: 0xb02a2ffc
Stack overflow in unmanaged: IP: 0x214e34, fault addr: 0xb02a2fec
Stack overflow in unmanaged: IP: 0x1b6c7c, fault addr: 0xb02a1fbc
Stack overflow in unmanaged: IP: 0x95f7b8c7, fault addr: 0xb02a2fec
Stack overflow in unmanaged: IP: 0x1c6a3c, fault addr: 0xb02a2d50
Stack overflow in unmanaged: IP: 0x14685c, fault addr: 0xb02a1dfc
Unhandled CLR exception reading input:
CLR Exception: System.NullReferenceException
System.NullReferenceException: Object reference not set to an instance of an object
  at #.psyntax.main::with-guard#1$2592 (IronScheme.Scripting.CodeContext $context, System.Object e) <0x3a7d448 + 0x0005f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x3877478 + 0x00036> in <filename unknown>:0 
  at IronScheme.Runtime.R6RS.Exceptions.WithClrExceptionHandler (System.Object handler, System.Object thunk) <0x391d0e8 + 0x00077> in <filename
 unknown>:0 
  at #.psyntax.main::with-guard (System.Object f) <0x391cee0 + 0x001cf> in <filename unknown>:0 
  at IronScheme.Scripting.ScriptCode.Run (IronScheme.Scripting.CodeContext codeContext, Boolean tryEvaluate) <0x38d5e58 + 0x000c6> in <filename
 unknown>:0 
  at IronScheme.Scripting.ScriptCode.Run (IronScheme.Scripting.ScriptModule module) <0x38d5db0 + 0x0008b> in <filename unknown>:0 
  at IronScheme.Runtime.Builtins+<>c__DisplayClass11.<CompileCore>b__b () <0x38d5d78 + 0x0002f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x38ab848 + 0x0002c> in <filename unknown>:0 
  at #.psyntax.expander::eval (System.Object x, System.Object env) <0x3883100 + 0x000f7> in <filename unknown>:0 
  at IronScheme.Scripting.ScriptCode.Run (IronScheme.Scripting.CodeContext codeContext, Boolean tryEvaluate) <0x38d5e58 + 0x000fa> in <filename
 unknown>:0 
  at IronScheme.Scripting.ScriptCode.Run (IronScheme.Scripting.ScriptModule module) <0x38d5db0 + 0x0008b> in <filename unknown>:0 
  at IronScheme.Scripting.Hosting.CompiledCode.Evaluate (IScriptModule module) <0x39139d0 + 0x0005b> in <filename unknown>:0 
  at IronScheme.Scripting.Hosting.CompiledCode.Execute (IScriptModule module) <0x39139a8 + 0x00017> in <filename unknown>:0 
  at IronScheme.Scripting.Hosting.ScriptEngine.ExecuteSourceUnit (IronScheme.Scripting.Hosting.SourceUnit sourceUnit, IScriptModule module) <0x38dbfd0
 + 0x00033> in <filename unknown>:0 
  at IronScheme.Scripting.Hosting.ScriptEngine.Execute (System.String code, IScriptModule module) <0x38dbf90 + 0x0002f> in <filename unknown>:0 
  at IronScheme.Scripting.Hosting.ScriptEngine.Execute (System.String code) <0x391cb00 + 0x0001f> in <filename unknown>:0 
  at IronScheme.Hosting.IronSchemeLanguageProvider+CommandLineX+<>c__DisplayClass4.<RunFile>b__2 () <0x391c940 + 0x00065> in <filename unknown>:0

composed-petrinets/examples/syntax-tests.scm:

tack overflow in unmanaged: IP: 0x13ea44, fault addr: 0xb02a2ffc
Stack overflow in unmanaged: IP: 0x95f7b8c3, fault addr: 0xb02a1ffc
Stack overflow in unmanaged: IP: 0x2c7dc, fault addr: 0xb02a096c
Stack overflow in unmanaged: IP: 0x91e84cfd, fault addr: 0xb02a2ffc
Stack overflow in unmanaged: IP: 0x95f78a41, fault addr: 0xb02a1ffc
Stack overflow in unmanaged: IP: 0x95f78a41, fault addr: 0xb02a2fec
Stack overflow in unmanaged: IP: 0x18ce2c, fault addr: 0xb02a2ff0
Stack overflow in unmanaged: IP: 0x12ec7c, fault addr: 0xb02a1f9c
Stack overflow in unmanaged: IP: 0x95f7c16d, fault addr: 0xb02a2ffc
Stack overflow in unmanaged: IP: 0x95f79c6c, fault addr: 0xb02a2ffc
Stack overflow in unmanaged: IP: 0xbe85c, fault addr: 0xb02a1ddc
Stack overflow in unmanaged: IP: 0x13ea3c, fault addr: 0xb02a1fb0
Unhandled CLR exception reading input:
CLR Exception: System.NullReferenceException
System.NullReferenceException: Object reference not set to an instance of an object
  at #.psyntax.main::with-guard#1$2592 (IronScheme.Scripting.CodeContext $context, System.Object e) <0x3b32670 + 0x0005f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x380b478 + 0x00036> in <filename unknown>:0 
  at IronScheme.Runtime.R6RS.Exceptions.WithClrExceptionHandler (System.Object handler, System.Object thunk) <0x38b10e8 + 0x00077> in <filename
 unknown>:0 
  at #.psyntax.main::with-guard (System.Object f) <0x38b0ee0 + 0x001cf> in <filename unknown>:0 
  at IronScheme.Scripting.ScriptCode.Run (IronScheme.Scripting.CodeContext codeContext, Boolean tryEvaluate) <0x3869e58 + 0x000c6> in <filename
 unknown>:0 
  at IronScheme.Scripting.ScriptCode.Run (IronScheme.Scripting.ScriptModule module) <0x3869db0 + 0x0008b> in <filename unknown>:0 
  at IronScheme.Runtime.Builtins+<>c__DisplayClass11.<CompileCore>b__b () <0x3869d78 + 0x0002f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x383f848 + 0x0002c> in <filename unknown>:0 
  at #.psyntax.expander::eval (System.Object x, System.Object env) <0x3817100 + 0x000f7> in <filename unknown>:0 
  at IronScheme.Scripting.ScriptCode.Run (IronScheme.Scripting.CodeContext codeContext, Boolean tryEvaluate) <0x3869e58 + 0x000fa> in <filename
 unknown>:0 
  at IronScheme.Scripting.ScriptCode.Run (IronScheme.Scripting.ScriptModule module) <0x3869db0 + 0x0008b> in <filename unknown>:0 
  at IronScheme.Scripting.Hosting.CompiledCode.Evaluate (IScriptModule module) <0x38a79d0 + 0x0005b> in <filename unknown>:0 
  at IronScheme.Scripting.Hosting.CompiledCode.Execute (IScriptModule module) <0x38a79a8 + 0x00017> in <filename unknown>:0 
  at IronScheme.Scripting.Hosting.ScriptEngine.ExecuteSourceUnit (IronScheme.Scripting.Hosting.SourceUnit sourceUnit, IScriptModule module) <0x386ffc0
 + 0x00033> in <filename unknown>:0 
  at IronScheme.Scripting.Hosting.ScriptEngine.Execute (System.String code, IScriptModule module) <0x386ff80 + 0x0002f> in <filename unknown>:0 
  at IronScheme.Scripting.Hosting.ScriptEngine.Execute (System.String code) <0x38b0b00 + 0x0001f> in <filename unknown>:0 
  at IronScheme.Hosting.IronSchemeLanguageProvider+CommandLineX+<>c__DisplayClass4.<RunFile>b__2 () <0x38b0940 + 0x00065> in <filename unknown>:0

[christoff-buerger]

The reason why tests/ast-construction.scm and tests/patterns.scm fail is not clear and needs further investigations.

The errors of the other tests look similar to issue #37. The state machines and composed Petri nets are based on transitive closure computations via circular reference attributes. The stack overflow is a hint, that fixpoint computation does not properly terminate. This is most likely due to an erroneous equal? implementation in IronScheme; the same issue GNU Guile suffers from (cf. issue #37). its not 100% clear though.

I can only suggest not to use circular attributes with cached AST nodes in IronScheme, as they most likely do not work.

[christoff-buerger]

Using a new IronScheme version (commit leppie/IronScheme@29c36d1d70f05f8c49d79d31a25e626750239e86), examples/state-machines/state-machines.scm now passes.

[christoff-buerger]

Activating the Mono's LLVM backend via mono --llvm makes things worse, but the error messages are more precise. The following additional tests fail:

• of examples/ttc-2015-fuml-activity-diagrams/examples/contest-tests the following:
  • test5.ad
  • test6_false.ad
  • test6_true.ad
  • testperformance_variant3_2.ad
• all SiPLE tests

tests/ast-construction.scm:

[ERROR] FATAL UNHANDLED EXCEPTION: System.StackOverflowException: The requested operation caused a stack overflow.
  at System.Globalization.TextInfo.get_IsAsciiCasingSameAsInvariant () <0x24a9960 + 0x0000b> in <filename unknown>:0 
  at System.Globalization.TextInfo.ToLower (Char c) <0x24a9710 + 0x00030> in <filename unknown>:0 
  at System.Char.ToLower (Char c, System.Globalization.CultureInfo culture) <0x240ea30 + 0x00033> in <filename unknown>:0 
  at System.Text.RegularExpressions.RegexBoyerMoore.Scan (System.String text, Int32 index, Int32 beglimit, Int32 endlimit) <0x3c39a00 + 0x000db> in <filename unknown>:0 
  at System.Text.RegularExpressions.RegexInterpreter.FindFirstChar () <0x3c39200 + 0x000d7> in <filename unknown>:0 
  at System.Text.RegularExpressions.RegexRunner.Scan (System.Text.RegularExpressions.Regex regex, System.String text, Int32 textbeg, Int32 textend, Int32 textstart, Int32 prevlen, Boolean quick, TimeSpan timeout) <0x3c38828 + 0x001d4> in <filename unknown>:0 
  at System.Text.RegularExpressions.Regex.Run (Boolean quick, Int32 prevlen, System.String input, Int32 beginning, Int32 length, Int32 startat) <0x3c37ce0 + 0x00144> in <filename unknown>:0 
  at System.Text.RegularExpressions.Regex.Match (System.String input, Int32 startat) <0x3c377b0 + 0x00046> in <filename unknown>:0 
  at System.Text.RegularExpressions.RegexReplacement.Replace (System.Text.RegularExpressions.MatchEvaluator evaluator, System.Text.RegularExpressions.Regex regex, System.String input, Int32 count, Int32 startat) <0x3c372a0 + 0x00057> in <filename unknown>:0 
  at System.Text.RegularExpressions.Regex.Replace (System.String input, System.Text.RegularExpressions.MatchEvaluator evaluator, Int32 count, Int32 startat) <0x3c36df0 + 0x00038> in <filename unknown>:0 
  at System.Text.RegularExpressions.Regex.Replace (System.String input, System.Text.RegularExpressions.MatchEvaluator evaluator) <0x3c36c60 + 0x00045> in <filename unknown>:0 
  at IronScheme.Scripting.SymbolTable.StringToId (System.String field) <0x3c36a08 + 0x000cb> in <filename unknown>:0 
  at IronScheme.Scripting.SymbolTable.StringToObject (System.String name) <0x17ec6b8 + 0x0001f> in <filename unknown>:0 
  at #.ironscheme.base::string->symbol (System.Object str) <0x4850b90 + 0x00052> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.base::vector-map (System.Object p, System.Object vec) <0x49e41f0 + 0x0016f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::get-field-pairs (System.Object rtd, System.Object rec) <0x49e3c48 + 0x00013> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49e2be8 + 0x0020b> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49e2be8 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49e2be8 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49e50f0 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47f9168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49e4fb8 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48598f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49e4b20 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49e2be8 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49e2be8 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49e50f0 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47f9168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49e4fb8 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48598f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49e4b20 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49e2be8 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49e2be8 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49e50f0 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47f9168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49e4fb8 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48598f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49e4b20 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49e2be8 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49e2be8 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49e50f0 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47f9168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49e4fb8 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48598f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49e4b20 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49e2be8 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49e2be8 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49e50f0 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47f9168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49e4fb8 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48598f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49e4b20 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49e2be8 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49e2be8 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49e50f0 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47f9168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49e4fb8 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48598f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49e4b20 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49e2be8 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49e2be8 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49e50f0 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47f9168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49e4fb8 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48598f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49e4b20 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49e2be8 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49e2be8 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49e50f0 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47f9168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49e4fb8 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48598f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49e4b20 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49e2be8 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49e2be8 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49e50f0 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47f9168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49e4fb8 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48598f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49e4b20 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49e2be8 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49e2be8 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49e50f0 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47f9168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49e4fb8 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48598f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49e4b20 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49e2be8 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49e2be8 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49e50f0 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47f9168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49e4fb8 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48598f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49e4b20 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49e2be8 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49e2be8 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49e50f0 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47f9168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49e4fb8 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48598f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49e4b20 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49e2be8 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49e2be8 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49e50f0 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47f9168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49e4fb8 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48598f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49e4b20 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49e2be8 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49e2be8 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49e50f0 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47f9168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49e4fb8 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48598f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49e4b20 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49e2be8 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49e2be8 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49e50f0 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47f9168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49e4fb8 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48598f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49e4b20 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49e2be8 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49e2be8 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49e50f0 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47f9168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49e4fb8 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48598f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49e4b20 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49e2be8 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49e2be8 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49e50f0 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47f9168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49e4fb8 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48598f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49e4b20 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49e2be8 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49e2be8 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49e50f0 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47f9168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49e4fb8 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48598f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49e4b20 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49e2be8 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49e2be8 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49e50f0 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47f9168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49e4fb8 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48598f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49e4b20 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49e2be8 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49e2be8 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49e50f0 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47f9168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49e4fb8 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48598f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49e4b20 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49e2be8 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49e2be8 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49e50f0 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47f9168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49e4fb8 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48598f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49e4b20 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49e2be8 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49e2be8 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49e50f0 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47f9168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49e4fb8 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48598f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49e4b20 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49e2be8 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49e2be8 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49e50f0 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47f9168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49e4fb8 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48598f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49e4b20 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49e2be8 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49e2be8 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49e50f0 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47f9168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49e4fb8 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48598f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49e4b20 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49e2be8 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49e2be8 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49e50f0 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47f9168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49e4fb8 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48598f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49e4b20 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49e2be8 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49e2be8 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49e50f0 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47f9168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49e4fb8 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48598f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49e4b20 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49e2be8 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49e2be8 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49e50f0 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47f9168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49e4fb8 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48598f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49e4b20 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49e2be8 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49e2be8 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49e50f0 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47f9168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49e4fb8 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48598f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49e4b20 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49e2be8 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49e2be8 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49e50f0 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47f9168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49e4fb8 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48598f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49e4b20 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49e2be8 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49e2be8 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49e50f0 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47f9168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49e4fb8 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48598f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49e4b20 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49e2be8 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49e2be8 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49e50f0 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47f9168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49e4fb8 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48598f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49e4b20 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49e2be8 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49e2be8 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49e50f0 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47f9168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49e4fb8 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48598f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49e4b20 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49e2be8 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49e2be8 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49e50f0 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47f9168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49e4fb8 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48598f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49e4b20 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49e2be8 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49e2be8 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49e50f0 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47f9168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49e4fb8 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48598f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49e4b20 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49e2be8 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49e2be8 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49e50f0 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47f9168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49e4fb8 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48598f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49e4b20 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49e2be8 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49e2be8 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49e50f0 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47f9168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49e4fb8 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48598f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49e4b20 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49e2be8 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49e2be8 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49e50f0 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47f9168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49e4fb8 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48598f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49e4b20 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49e2be8 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49e2be8 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49e50f0 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47f9168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49e4fb8 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48598f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49e4b20 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49e2be8 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49e2be8 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49e50f0 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47f9168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49e4fb8 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48598f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49e4b20 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49e2be8 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49e2be8 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49e50f0 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47f9168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49e4fb8 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48598f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49e4b20 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49e2be8 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49e2be8 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49e50f0 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47f9168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49e4fb8 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48598f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49e4b20 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49e2be8 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49e2be8 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49e50f0 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47f9168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49e4fb8 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48598f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49e4b20 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49e2be8 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49e2be8 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49e50f0 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47f9168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49e4fb8 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48598f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49e4b20 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49e2be8 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49e2be8 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49e50f0 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47f9168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49e4fb8 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48598f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49e4b20 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49e2be8 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49e2be8 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49e50f0 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47f9168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49e4fb8 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48598f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49e4b20 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49e2be8 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49e2be8 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49e50f0 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47f9168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49e4fb8 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48598f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49e4b20 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49e2be8 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49e2be8 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49e50f0 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47f9168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49e4fb8 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48598f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49e4b20 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49e2be8 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49e2be8 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49e50f0 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47f9168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49e4fb8 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48598f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49e4b20 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49e2be8 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49e2be8 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49e50f0 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47f9168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49e4fb8 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48598f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49e4b20 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 

[christoff-buerger]

tests/patterns.scm:

[ERROR] FATAL UNHANDLED EXCEPTION: System.StackOverflowException: The requested operation caused a stack overflow.
  at System.Nullable`1[T].get_Value () <0x2770640 + 0x00007> 23709 in <filename unknown>:0 
  at System.Globalization.TextInfo.get_IsAsciiCasingSameAsInvariant () <0x242e960 + 0x000f0> in <filename unknown>:0 
  at System.Globalization.TextInfo.ToLower (Char c) <0x242e710 + 0x00030> in <filename unknown>:0 
  at System.Char.ToLower (Char c, System.Globalization.CultureInfo culture) <0x2393a30 + 0x00033> in <filename unknown>:0 
  at System.Text.RegularExpressions.RegexBoyerMoore.Scan (System.String text, Int32 index, Int32 beglimit, Int32 endlimit) <0x3c04a00 + 0x000db> in <filename unknown>:0 
  at System.Text.RegularExpressions.RegexInterpreter.FindFirstChar () <0x3c04200 + 0x000d7> in <filename unknown>:0 
  at System.Text.RegularExpressions.RegexRunner.Scan (System.Text.RegularExpressions.Regex regex, System.String text, Int32 textbeg, Int32 textend, Int32 textstart, Int32 prevlen, Boolean quick, TimeSpan timeout) <0x3c03828 + 0x001d4> in <filename unknown>:0 
  at System.Text.RegularExpressions.Regex.Run (Boolean quick, Int32 prevlen, System.String input, Int32 beginning, Int32 length, Int32 startat) <0x3c02ce0 + 0x00144> in <filename unknown>:0 
  at System.Text.RegularExpressions.Regex.Match (System.String input, Int32 startat) <0x3c027b0 + 0x00046> in <filename unknown>:0 
  at System.Text.RegularExpressions.RegexReplacement.Replace (System.Text.RegularExpressions.MatchEvaluator evaluator, System.Text.RegularExpressions.Regex regex, System.String input, Int32 count, Int32 startat) <0x3c022a0 + 0x00057> in <filename unknown>:0 
  at System.Text.RegularExpressions.Regex.Replace (System.String input, System.Text.RegularExpressions.MatchEvaluator evaluator, Int32 count, Int32 startat) <0x3c01df0 + 0x00038> in <filename unknown>:0 
  at System.Text.RegularExpressions.Regex.Replace (System.String input, System.Text.RegularExpressions.MatchEvaluator evaluator) <0x3c01c60 + 0x00045> in <filename unknown>:0 
  at IronScheme.Scripting.SymbolTable.StringToId (System.String field) <0x3c01a08 + 0x000cb> in <filename unknown>:0 
  at IronScheme.Scripting.SymbolTable.StringToObject (System.String name) <0x37586b8 + 0x0001f> in <filename unknown>:0 
  at #.ironscheme.base::string->symbol (System.Object str) <0x4818b90 + 0x00052> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47d8990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.base::vector-map (System.Object p, System.Object vec) <0x49cd620 + 0x0016f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::get-field-pairs (System.Object rtd, System.Object rec) <0x49cd070 + 0x00013> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49cc010 + 0x0020b> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47d8990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4822ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49cc010 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47d8990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4822ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49cc010 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49ce518 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47c1168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49ce3e0 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48218f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49cdf50 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47d8990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4822ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49cc010 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47d8990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4822ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49cc010 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49ce518 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47c1168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49ce3e0 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48218f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49cdf50 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47d8990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4822ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49cc010 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47d8990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4822ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49cc010 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49ce518 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47c1168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49ce3e0 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48218f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49cdf50 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47d8990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4822ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49cc010 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47d8990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4822ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49cc010 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49ce518 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47c1168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49ce3e0 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48218f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49cdf50 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47d8990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4822ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49cc010 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47d8990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4822ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49cc010 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49ce518 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47c1168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49ce3e0 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48218f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49cdf50 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47d8990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4822ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49cc010 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47d8990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4822ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49cc010 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49ce518 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47c1168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49ce3e0 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48218f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49cdf50 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47d8990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4822ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49cc010 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47d8990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4822ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49cc010 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49ce518 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47c1168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49ce3e0 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48218f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49cdf50 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47d8990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4822ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49cc010 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47d8990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4822ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49cc010 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49ce518 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47c1168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49ce3e0 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48218f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49cdf50 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47d8990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4822ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49cc010 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47d8990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4822ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49cc010 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49ce518 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47c1168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49ce3e0 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48218f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49cdf50 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47d8990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4822ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49cc010 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47d8990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4822ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49cc010 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49ce518 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47c1168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49ce3e0 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48218f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49cdf50 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47d8990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4822ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49cc010 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47d8990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4822ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49cc010 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49ce518 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47c1168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49ce3e0 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48218f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49cdf50 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47d8990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4822ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49cc010 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47d8990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4822ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49cc010 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49ce518 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47c1168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49ce3e0 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48218f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49cdf50 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47d8990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4822ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49cc010 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47d8990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4822ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49cc010 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49ce518 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47c1168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49ce3e0 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48218f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49cdf50 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47d8990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4822ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49cc010 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47d8990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4822ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49cc010 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49ce518 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47c1168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49ce3e0 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48218f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49cdf50 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47d8990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4822ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49cc010 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47d8990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4822ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49cc010 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49ce518 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47c1168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49ce3e0 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48218f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49cdf50 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47d8990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4822ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49cc010 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47d8990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4822ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49cc010 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49ce518 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47c1168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49ce3e0 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48218f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49cdf50 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47d8990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4822ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49cc010 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47d8990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4822ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49cc010 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49ce518 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47c1168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49ce3e0 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48218f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49cdf50 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47d8990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4822ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49cc010 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47d8990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4822ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49cc010 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49ce518 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47c1168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49ce3e0 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48218f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49cdf50 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47d8990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4822ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49cc010 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47d8990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4822ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49cc010 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49ce518 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47c1168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49ce3e0 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48218f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49cdf50 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47d8990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4822ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49cc010 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47d8990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4822ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49cc010 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49ce518 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47c1168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49ce3e0 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48218f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49cdf50 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47d8990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4822ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49cc010 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47d8990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4822ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49cc010 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49ce518 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47c1168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49ce3e0 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48218f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49cdf50 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47d8990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4822ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49cc010 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47d8990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4822ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49cc010 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49ce518 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47c1168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49ce3e0 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48218f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49cdf50 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47d8990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4822ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49cc010 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47d8990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4822ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49cc010 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49ce518 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47c1168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49ce3e0 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48218f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49cdf50 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47d8990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4822ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49cc010 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47d8990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4822ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49cc010 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49ce518 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47c1168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49ce3e0 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48218f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49cdf50 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47d8990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4822ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49cc010 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47d8990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4822ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49cc010 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49ce518 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47c1168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49ce3e0 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48218f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49cdf50 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47d8990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4822ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49cc010 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47d8990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4822ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49cc010 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49ce518 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47c1168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49ce3e0 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48218f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49cdf50 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47d8990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4822ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49cc010 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47d8990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4822ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49cc010 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49ce518 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47c1168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49ce3e0 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48218f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49cdf50 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47d8990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4822ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49cc010 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47d8990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4822ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49cc010 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49ce518 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47c1168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49ce3e0 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48218f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49cdf50 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47d8990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4822ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49cc010 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47d8990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4822ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49cc010 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49ce518 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47c1168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49ce3e0 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48218f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49cdf50 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47d8990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4822ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49cc010 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47d8990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4822ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49cc010 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49ce518 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47c1168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49ce3e0 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48218f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49cdf50 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47d8990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4822ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49cc010 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47d8990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4822ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49cc010 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49ce518 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47c1168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49ce3e0 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48218f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49cdf50 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47d8990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4822ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49cc010 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47d8990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4822ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49cc010 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49ce518 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47c1168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49ce3e0 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48218f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49cdf50 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47d8990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4822ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49cc010 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47d8990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4822ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49cc010 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49ce518 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47c1168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49ce3e0 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48218f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49cdf50 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47d8990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4822ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49cc010 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47d8990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4822ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49cc010 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49ce518 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47c1168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49ce3e0 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48218f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49cdf50 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47d8990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4822ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49cc010 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47d8990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4822ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49cc010 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49ce518 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47c1168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49ce3e0 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48218f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49cdf50 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47d8990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4822ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49cc010 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47d8990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4822ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49cc010 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49ce518 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47c1168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49ce3e0 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48218f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49cdf50 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47d8990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4822ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49cc010 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47d8990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4822ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49cc010 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49ce518 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47c1168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49ce3e0 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48218f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49cdf50 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47d8990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4822ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49cc010 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47d8990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4822ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49cc010 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49ce518 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47c1168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49ce3e0 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48218f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49cdf50 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47d8990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4822ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49cc010 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47d8990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4822ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49cc010 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49ce518 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47c1168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49ce3e0 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48218f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49cdf50 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47d8990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4822ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49cc010 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47d8990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4822ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49cc010 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49ce518 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47c1168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49ce3e0 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48218f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49cdf50 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47d8990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4822ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49cc010 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47d8990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4822ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49cc010 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49ce518 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47c1168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49ce3e0 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48218f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49cdf50 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47d8990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4822ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49cc010 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47d8990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4822ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49cc010 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49ce518 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47c1168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49ce3e0 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48218f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49cdf50 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47d8990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4822ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49cc010 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47d8990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4822ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49cc010 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49ce518 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47c1168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49ce3e0 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48218f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49cdf50 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47d8990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4822ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49cc010 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47d8990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4822ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49cc010 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49ce518 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47c1168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49ce3e0 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48218f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49cdf50 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47d8990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4822ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49cc010 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47d8990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4822ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49cc010 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49ce518 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47c1168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49ce3e0 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48218f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49cdf50 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47d8990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4822ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49cc010 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47d8990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4822ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49cc010 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49ce518 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47c1168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49ce3e0 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48218f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49cdf50 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47d8990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4822ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49cc010 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47d8990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4822ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49cc010 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49ce518 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47c1168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49ce3e0 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48218f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49cdf50 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47d8990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4822ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49cc010 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47d8990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4822ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49cc010 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49ce518 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47c1168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49ce3e0 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48218f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49cdf50 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47d8990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4822ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49cc010 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47d8990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4822ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49cc010 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4832e80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4954230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4953ed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49ce518 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47c1168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49ce3e0 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48218f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49cdf50 + 0x002e1> in <filename unknown>:0 

[christoff-buerger]

examples/ttc-2015-fuml-activity-diagrams/examples/contest-tests: test5.ad, test6_false.ad, test6_true.ad, testperformance_variant3_2.ad:

Unhandled CLR exception during evaluation:
CLR Exception: System.InvalidCastException
System.InvalidCastException: Specified cast is not valid.
  at racr.core.att-value+ (System.Object name, System.Object n, System.Object args) <0x52d75a0 + 0x00afd> in <filename unknown>:0 
  at ttc-2015-fuml-activity-diagrams.user-interface.run-activity-diagram (System.Object diagram-file, System.Object input-file, System.Object mode, System.Object print-trace?) <0x52c6410 + 0x0019e> in <filename unknown>:0 
  at eval-core(005).$2 () <0x529dad0 + 0x0012c> in <filename unknown>:0 
  at IronScheme.Scripting.ScriptCode.Run (IronScheme.Scripting.CodeContext codeContext, Boolean tryEvaluate) <0x4941e60 + 0x0008d> in <filename unknown>:0 
  at IronScheme.Scripting.ScriptCode.Run (IronScheme.Scripting.ScriptModule module) <0x4941cd0 + 0x00071> in <filename unknown>:0 
  at IronScheme.Runtime.Builtins+<>c__DisplayClass51_1.<CompileCore>b__1 () <0x4941bc0 + 0x00027> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48d98f8 + 0x0002c> in <filename unknown>:0 
  at #.psyntax.expander::compile-r6rs-top-level#anon#1#2$2646 (IronScheme.Scripting.CodeContext $context) <0x49cee20 + 0x00087> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48d98f8 + 0x0002c> in <filename unknown>:0 
  at #.psyntax.main::load-r6rs-top-level#1#anon#1#2#3#4#5#6$2688 (IronScheme.Scripting.CodeContext $context) <0x49c86f0 + 0x00053> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48d98f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.exceptions::dynamic-wind (System.Object in, System.Object proc, System.Object out) <0x48c0970 + 0x000f8> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48d98f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.exceptions::dynamic-wind (System.Object in, System.Object proc, System.Object out) <0x48c0970 + 0x000f8> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object[] args) <0x485ed08 + 0x00331> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+VarArgClosure.Call (System.Object[] args) <0x485d9d0 + 0x0014e> in <filename unknown>:0 
  at #.psyntax.main::load#1$2662 (IronScheme.Scripting.CodeContext $context) <0x49bfe10 + 0x000d3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48d98f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.exceptions::with-exception-handlers#1#anon#1$1838 (IronScheme.Scripting.CodeContext $context) <0x49bfc90 + 0x0004b> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48d98f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.exceptions::dynamic-wind (System.Object in, System.Object proc, System.Object out) <0x48c0970 + 0x000f8> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4890990 + 0x00036> in <filename unknown>:0 
  at IronScheme.Runtime.Builtins.CallWithCurrentContinuation (System.Object fc1) <0x49bee30 + 0x00093> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48d98f8 + 0x0002c> in <filename unknown>:0 
  at IronScheme.Runtime.R6RS.Exceptions.WithClrExceptionHandler (System.Object handler, System.Object thunk) <0x49bec48 + 0x00049> in <filename unknown>:0 

[christoff-buerger]

siple/examples/correc: abnormal_termination.siple, closures.siple, nested_procedures.siple, pointers.siple, procedure_basics.siple, type_coercions.siple:

Unhandled CLR exception during evaluation:
CLR Exception: System.InvalidCastException
System.InvalidCastException: Specified cast is not valid.
  at siple.type-coercion.specify-type-coercion#1#anon#1#2#3#4#5#6#7#8#9$234 (IronScheme.Scripting.CodeContext $context, System.Object n) <0x5466630 + 0x0018e> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object[] args) <0x484ed08 + 0x00331> in <filename unknown>:0 
  at racr.core.att-value#anon#1#2#3#4#5#6$626 (IronScheme.Scripting.CodeContext $context) <0x545e3c0 + 0x000b5> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48c98f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.exceptions::dynamic-wind (System.Object in, System.Object proc, System.Object out) <0x48b0970 + 0x000f8> in <filename unknown>:0 
  at racr.core.att-value+ (System.Object name, System.Object n, System.Object args) <0x5459d20 + 0x00acf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object[] args) <0x484ed08 + 0x00331> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+VarArgClosure.Call (System.Object[] args) <0x484d9d0 + 0x0014e> in <filename unknown>:0 
  at racr.core.lookup-attribute##loop#anon#1#2#3$615 (IronScheme.Scripting.CodeContext $context, System.Object n, System.Object args) <0x545eed0 + 0x000b2> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object[] args) <0x484ed08 + 0x00331> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+VarArgClosure.Call (System.Object[] args) <0x484d9d0 + 0x0014e> in <filename unknown>:0 
  at racr.core.att-value#anon#1#2#3#4#5#6$626 (IronScheme.Scripting.CodeContext $context) <0x545e3c0 + 0x000b5> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48c98f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.exceptions::dynamic-wind (System.Object in, System.Object proc, System.Object out) <0x48b0970 + 0x000f8> in <filename unknown>:0 
  at racr.core.att-value+ (System.Object name, System.Object n, System.Object args) <0x5459d20 + 0x00acf> in <filename unknown>:0 
  at siple.type-coercion.perform-type-coercions##anon$221 (IronScheme.Scripting.CodeContext $context, System.Object n) <0x5458b50 + 0x00053> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at racr.core.perform-rewrites##find-and-apply#anon#1#2$889 (IronScheme.Scripting.CodeContext $context, System.Object transformer) <0x54589c0 + 0x00054> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::find (System.Object proc, System.Object l) <0x4ce39c0 + 0x00042> in <filename unknown>:0 
  at racr.core.perform-rewrites##find-and-apply#anon$888 (IronScheme.Scripting.CodeContext $context, System.Object n) <0x5458530 + 0x001ce> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::find (System.Object proc, System.Object l) <0x4ce39c0 + 0x00042> in <filename unknown>:0 
  at racr.core.perform-rewrites##find-and-apply#anon$888 (IronScheme.Scripting.CodeContext $context, System.Object n) <0x5458530 + 0x00155> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::find (System.Object proc, System.Object l) <0x4ce39c0 + 0x00042> in <filename unknown>:0 
  at racr.core.perform-rewrites##find-and-apply#anon$888 (IronScheme.Scripting.CodeContext $context, System.Object n) <0x5458530 + 0x00155> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::find (System.Object proc, System.Object l) <0x4ce39c0 + 0x00042> in <filename unknown>:0 
  at racr.core.perform-rewrites##find-and-apply#anon$888 (IronScheme.Scripting.CodeContext $context, System.Object n) <0x5458530 + 0x00155> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::find (System.Object proc, System.Object l) <0x4ce39c0 + 0x00042> in <filename unknown>:0 
  at racr.core.perform-rewrites##find-and-apply#anon$888 (IronScheme.Scripting.CodeContext $context, System.Object n) <0x5458530 + 0x00155> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::find (System.Object proc, System.Object l) <0x4ce39c0 + 0x00042> in <filename unknown>:0 
  at racr.core.perform-rewrites##find-and-apply#anon$888 (IronScheme.Scripting.CodeContext $context, System.Object n) <0x5458530 + 0x00155> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::find (System.Object proc, System.Object l) <0x4ce39c0 + 0x00042> in <filename unknown>:0 
  at racr.core.perform-rewrites##find-and-apply#anon$888 (IronScheme.Scripting.CodeContext $context, System.Object n) <0x5458530 + 0x00155> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at racr.core.perform-rewrites##1#loop$890 (IronScheme.Scripting.CodeContext $context) <0x5347bf0 + 0x001c3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48c98f8 + 0x0002c> in <filename unknown>:0 
  at racr.core.perform-rewrites+ (System.Object n, System.Object strategy, System.Object transformers) <0x5356b50 + 0x00517> in <filename unknown>:0 
  at siple.parser.construct-parser#1#anon#1#2#3#4#5#6#7##anon$277 (IronScheme.Scripting.CodeContext $context) <0x533f7c0 + 0x00064> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48c98f8 + 0x0002c> in <filename unknown>:0 
  at siple.main.siple-interpret#anon#1$444 (IronScheme.Scripting.CodeContext $context) <0x51b4f00 + 0x00089> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48c98f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.exceptions::dynamic-wind (System.Object in, System.Object proc, System.Object out) <0x48b0970 + 0x000f8> in <filename unknown>:0 
  at siple.main.siple-interpret (System.Object input, System.Object output-port) <0x5337980 + 0x001f8> in <filename unknown>:0 
  at eval-core(005).$2 () <0x53372e0 + 0x0012e> in <filename unknown>:0 
  at IronScheme.Scripting.ScriptCode.Run (IronScheme.Scripting.CodeContext codeContext, Boolean tryEvaluate) <0x4931e60 + 0x0008d> in <filename unknown>:0 
  at IronScheme.Scripting.ScriptCode.Run (IronScheme.Scripting.ScriptModule module) <0x4931cd0 + 0x00071> in <filename unknown>:0 
  at IronScheme.Runtime.Builtins+<>c__DisplayClass51_1.<CompileCore>b__1 () <0x4931bc0 + 0x00027> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48c98f8 + 0x0002c> in <filename unknown>:0 
  at #.psyntax.expander::compile-r6rs-top-level#anon#1#2$2646 (IronScheme.Scripting.CodeContext $context) <0x49bef30 + 0x00087> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48c98f8 + 0x0002c> in <filename unknown>:0 
  at #.psyntax.main::load-r6rs-top-level#1#anon#1#2#3#4#5#6$2688 (IronScheme.Scripting.CodeContext $context) <0x49b84f0 + 0x00053> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48c98f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.exceptions::dynamic-wind (System.Object in, System.Object proc, System.Object out) <0x48b0970 + 0x000f8> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48c98f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.exceptions::dynamic-wind (System.Object in, System.Object proc, System.Object out) <0x48b0970 + 0x000f8> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object[] args) <0x484ed08 + 0x00331> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+VarArgClosure.Call (System.Object[] args) <0x484d9d0 + 0x0014e> in <filename unknown>:0 
  at #.psyntax.main::load#1$2662 (IronScheme.Scripting.CodeContext $context) <0x49afaf0 + 0x000d3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48c98f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.exceptions::with-exception-handlers#1#anon#1$1838 (IronScheme.Scripting.CodeContext $context) <0x49af970 + 0x0004b> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48c98f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.exceptions::dynamic-wind (System.Object in, System.Object proc, System.Object out) <0x48b0970 + 0x000f8> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at IronScheme.Runtime.Builtins.CallWithCurrentContinuation (System.Object fc1) <0x49aeb10 + 0x00093> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48c98f8 + 0x0002c> in <filename unknown>:0 
  at IronScheme.Runtime.R6RS.Exceptions.WithClrExceptionHandler (System.Object handler, System.Object thunk) <0x49ae928 + 0x00049> in <filename unknown>:0 

[christoff-buerger]

siple/examples/correct: assertions.siple, boolean_arithmetics.siple, control_flow.siple, integer_and_real_arithmetics.siple, relational_arithmetics.siple, scopes.siple:

Unhandled CLR exception during evaluation:
CLR Exception: System.InvalidCastException
System.InvalidCastException: Specified cast is not valid.
  at racr.core.node-find-child (System.Object n, System.Object context-name) <0x5333ae0 + 0x00151> in <filename unknown>:0 
  at racr.core.ast-child (System.Object i, System.Object n) <0x53334e0 + 0x00056> in <filename unknown>:0 
  at siple.well-formedness.specify-well-formedness#1#anon#1#2#3#4#5#6#7#8#9$394 (IronScheme.Scripting.CodeContext $context, System.Object n) <0x534a000 + 0x000ac> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object[] args) <0x47a6d08 + 0x00331> in <filename unknown>:0 
  at racr.core.att-value#anon#1#2#3#4#5#6$626 (IronScheme.Scripting.CodeContext $context) <0x53317a0 + 0x000b5> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48218f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.exceptions::dynamic-wind (System.Object in, System.Object proc, System.Object out) <0x4808970 + 0x000f8> in <filename unknown>:0 
  at racr.core.att-value+ (System.Object name, System.Object n, System.Object args) <0x532cf00 + 0x00acf> in <filename unknown>:0 
  at siple.interpreter.weave-interpreter#anon#1$413 (IronScheme.Scripting.CodeContext $context, System.Object n, System.Object args) <0x5349e00 + 0x00059> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object[] args) <0x47a6d08 + 0x00331> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+VarArgClosure.Call (System.Object[] args) <0x47a59d0 + 0x0014e> in <filename unknown>:0 
  at racr.core.ast-annotation-set!#anon$636 (IronScheme.Scripting.CodeContext $context, System.Object args) <0x5349c00 + 0x0008a> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object[] args) <0x47a6d08 + 0x00331> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+VarArgClosure.Call (System.Object[] args) <0x47a59d0 + 0x0014e> in <filename unknown>:0 
  at IronScheme.Runtime.Closure.Call (System.Object arg1) <0x47a5750 + 0x00046> in <filename unknown>:0 
  at siple.main.siple-interpret#anon#1$444 (IronScheme.Scripting.CodeContext $context) <0x510af00 + 0x000c1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48218f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.exceptions::dynamic-wind (System.Object in, System.Object proc, System.Object out) <0x4808970 + 0x000f8> in <filename unknown>:0 
  at siple.main.siple-interpret (System.Object input, System.Object output-port) <0x528b980 + 0x001f8> in <filename unknown>:0 
  at eval-core(005).$2 () <0x528b2e0 + 0x0012e> in <filename unknown>:0 
  at IronScheme.Scripting.ScriptCode.Run (IronScheme.Scripting.CodeContext codeContext, Boolean tryEvaluate) <0x4889e60 + 0x0008d> in <filename unknown>:0 
  at IronScheme.Scripting.ScriptCode.Run (IronScheme.Scripting.ScriptModule module) <0x4889cd0 + 0x00071> in <filename unknown>:0 
  at IronScheme.Runtime.Builtins+<>c__DisplayClass51_1.<CompileCore>b__1 () <0x4889bc0 + 0x00027> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48218f8 + 0x0002c> in <filename unknown>:0 
  at #.psyntax.expander::compile-r6rs-top-level#anon#1#2$2646 (IronScheme.Scripting.CodeContext $context) <0x4916f30 + 0x00087> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48218f8 + 0x0002c> in <filename unknown>:0 
  at #.psyntax.main::load-r6rs-top-level#1#anon#1#2#3#4#5#6$2688 (IronScheme.Scripting.CodeContext $context) <0x49104f0 + 0x00053> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48218f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.exceptions::dynamic-wind (System.Object in, System.Object proc, System.Object out) <0x4808970 + 0x000f8> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48218f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.exceptions::dynamic-wind (System.Object in, System.Object proc, System.Object out) <0x4808970 + 0x000f8> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object[] args) <0x47a6d08 + 0x00331> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+VarArgClosure.Call (System.Object[] args) <0x47a59d0 + 0x0014e> in <filename unknown>:0 
  at #.psyntax.main::load#1$2662 (IronScheme.Scripting.CodeContext $context) <0x4907af0 + 0x000d3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48218f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.exceptions::with-exception-handlers#1#anon#1$1838 (IronScheme.Scripting.CodeContext $context) <0x4907970 + 0x0004b> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48218f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.exceptions::dynamic-wind (System.Object in, System.Object proc, System.Object out) <0x4808970 + 0x000f8> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47d8990 + 0x00036> in <filename unknown>:0 
  at IronScheme.Runtime.Builtins.CallWithCurrentContinuation (System.Object fc1) <0x4906b10 + 0x00093> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48218f8 + 0x0002c> in <filename unknown>:0 
  at IronScheme.Runtime.R6RS.Exceptions.WithClrExceptionHandler (System.Object handler, System.Object thunk) <0x4906928 + 0x00049> in <filename unknown>:0 

[christoff-buerger]

siple/examples/incorrect: abnormal_termination.siple, procedure_basics.siple, procedure_parameter_redeclarations.siple:

Unhandled CLR exception during evaluation:
CLR Exception: System.InvalidCastException
System.InvalidCastException: Specified cast is not valid.
  at siple.type-coercion.specify-type-coercion#1#anon#1#2#3#4#5#6#7#8#9$234 (IronScheme.Scripting.CodeContext $context, System.Object n) <0x52c38c0 + 0x0018e> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object[] args) <0x4786d08 + 0x00331> in <filename unknown>:0 
  at racr.core.att-value#anon#1#2#3#4#5#6$626 (IronScheme.Scripting.CodeContext $context) <0x5292b60 + 0x000b5> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48018f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.exceptions::dynamic-wind (System.Object in, System.Object proc, System.Object out) <0x47e8970 + 0x000f8> in <filename unknown>:0 
  at racr.core.att-value+ (System.Object name, System.Object n, System.Object args) <0x528e4c0 + 0x00acf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object[] args) <0x4786d08 + 0x00331> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+VarArgClosure.Call (System.Object[] args) <0x47859d0 + 0x0014e> in <filename unknown>:0 
  at racr.core.lookup-attribute##loop#anon#1#2#3$615 (IronScheme.Scripting.CodeContext $context, System.Object n, System.Object args) <0x5293670 + 0x000b2> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object[] args) <0x4786d08 + 0x00331> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+VarArgClosure.Call (System.Object[] args) <0x47859d0 + 0x0014e> in <filename unknown>:0 
  at racr.core.att-value#anon#1#2#3#4#5#6$626 (IronScheme.Scripting.CodeContext $context) <0x5292b60 + 0x000b5> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48018f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.exceptions::dynamic-wind (System.Object in, System.Object proc, System.Object out) <0x47e8970 + 0x000f8> in <filename unknown>:0 
  at racr.core.att-value+ (System.Object name, System.Object n, System.Object args) <0x528e4c0 + 0x00acf> in <filename unknown>:0 
  at siple.type-coercion.perform-type-coercions##anon$221 (IronScheme.Scripting.CodeContext $context, System.Object n) <0x528d2f0 + 0x00053> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47b8990 + 0x00036> in <filename unknown>:0 
  at racr.core.perform-rewrites##find-and-apply#anon#1#2$889 (IronScheme.Scripting.CodeContext $context, System.Object transformer) <0x528d160 + 0x00054> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47b8990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::find (System.Object proc, System.Object l) <0x50c49c0 + 0x00042> in <filename unknown>:0 
  at racr.core.perform-rewrites##find-and-apply#anon$888 (IronScheme.Scripting.CodeContext $context, System.Object n) <0x528ccd0 + 0x001ce> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47b8990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::find (System.Object proc, System.Object l) <0x50c49c0 + 0x00042> in <filename unknown>:0 
  at racr.core.perform-rewrites##find-and-apply#anon$888 (IronScheme.Scripting.CodeContext $context, System.Object n) <0x528ccd0 + 0x00155> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47b8990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::find (System.Object proc, System.Object l) <0x50c49c0 + 0x00042> in <filename unknown>:0 
  at racr.core.perform-rewrites##find-and-apply#anon$888 (IronScheme.Scripting.CodeContext $context, System.Object n) <0x528ccd0 + 0x00155> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47b8990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::find (System.Object proc, System.Object l) <0x50c49c0 + 0x00042> in <filename unknown>:0 
  at racr.core.perform-rewrites##find-and-apply#anon$888 (IronScheme.Scripting.CodeContext $context, System.Object n) <0x528ccd0 + 0x00155> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47b8990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::find (System.Object proc, System.Object l) <0x50c49c0 + 0x00042> in <filename unknown>:0 
  at racr.core.perform-rewrites##find-and-apply#anon$888 (IronScheme.Scripting.CodeContext $context, System.Object n) <0x528ccd0 + 0x00155> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47b8990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::find (System.Object proc, System.Object l) <0x50c49c0 + 0x00042> in <filename unknown>:0 
  at racr.core.perform-rewrites##find-and-apply#anon$888 (IronScheme.Scripting.CodeContext $context, System.Object n) <0x528ccd0 + 0x00155> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47b8990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::find (System.Object proc, System.Object l) <0x50c49c0 + 0x00042> in <filename unknown>:0 
  at racr.core.perform-rewrites##find-and-apply#anon$888 (IronScheme.Scripting.CodeContext $context, System.Object n) <0x528ccd0 + 0x00155> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47b8990 + 0x00036> in <filename unknown>:0 
  at racr.core.perform-rewrites##1#loop$890 (IronScheme.Scripting.CodeContext $context) <0x528c2a0 + 0x001c3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48018f8 + 0x0002c> in <filename unknown>:0 
  at racr.core.perform-rewrites+ (System.Object n, System.Object strategy, System.Object transformers) <0x528abe0 + 0x00517> in <filename unknown>:0 
  at siple.parser.construct-parser#1#anon#1#2#3#4#5#6#7##anon$277 (IronScheme.Scripting.CodeContext $context) <0x52700b0 + 0x00064> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48018f8 + 0x0002c> in <filename unknown>:0 
  at siple.main.siple-interpret#anon#1$444 (IronScheme.Scripting.CodeContext $context) <0x5268640 + 0x00089> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48018f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.exceptions::dynamic-wind (System.Object in, System.Object proc, System.Object out) <0x47e8970 + 0x000f8> in <filename unknown>:0 
  at siple.main.siple-interpret (System.Object input, System.Object output-port) <0x5268000 + 0x001f8> in <filename unknown>:0 
  at eval-core(005).::dummy#anon$5 (IronScheme.Scripting.CodeContext $context) <0x52679b0 + 0x00035> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48018f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.exceptions::with-exception-handlers#1#anon#1$1838 (IronScheme.Scripting.CodeContext $context) <0x48e7970 + 0x0004b> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48018f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.exceptions::dynamic-wind (System.Object in, System.Object proc, System.Object out) <0x47e8970 + 0x000f8> in <filename unknown>:0 
  at eval-core(005).::dummy$3 (System.Object k) <0x5267720 + 0x00133> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47b8990 + 0x00036> in <filename unknown>:0 
  at IronScheme.Runtime.Builtins.CallWithCurrentContinuation (System.Object fc1) <0x48e6b10 + 0x00093> in <filename unknown>:0 
  at eval-core(005).$2 () <0x52672e0 + 0x000ce> in <filename unknown>:0 
  at IronScheme.Scripting.ScriptCode.Run (IronScheme.Scripting.CodeContext codeContext, Boolean tryEvaluate) <0x4869e60 + 0x0008d> in <filename unknown>:0 
  at IronScheme.Scripting.ScriptCode.Run (IronScheme.Scripting.ScriptModule module) <0x4869cd0 + 0x00071> in <filename unknown>:0 
  at IronScheme.Runtime.Builtins+<>c__DisplayClass51_1.<CompileCore>b__1 () <0x4869bc0 + 0x00027> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48018f8 + 0x0002c> in <filename unknown>:0 
  at #.psyntax.expander::compile-r6rs-top-level#anon#1#2$2646 (IronScheme.Scripting.CodeContext $context) <0x48f6f30 + 0x00087> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48018f8 + 0x0002c> in <filename unknown>:0 
  at #.psyntax.main::load-r6rs-top-level#1#anon#1#2#3#4#5#6$2688 (IronScheme.Scripting.CodeContext $context) <0x48f04f0 + 0x00053> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48018f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.exceptions::dynamic-wind (System.Object in, System.Object proc, System.Object out) <0x47e8970 + 0x000f8> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48018f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.exceptions::dynamic-wind (System.Object in, System.Object proc, System.Object out) <0x47e8970 + 0x000f8> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object[] args) <0x4786d08 + 0x00331> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+VarArgClosure.Call (System.Object[] args) <0x47859d0 + 0x0014e> in <filename unknown>:0 
  at #.psyntax.main::load#1$2662 (IronScheme.Scripting.CodeContext $context) <0x48e7af0 + 0x000d3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48018f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.exceptions::with-exception-handlers#1#anon#1$1838 (IronScheme.Scripting.CodeContext $context) <0x48e7970 + 0x0004b> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48018f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.exceptions::dynamic-wind (System.Object in, System.Object proc, System.Object out) <0x47e8970 + 0x000f8> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47b8990 + 0x00036> in <filename unknown>:0 
  at IronScheme.Runtime.Builtins.CallWithCurrentContinuation (System.Object fc1) <0x48e6b10 + 0x00093> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48018f8 + 0x0002c> in <filename unknown>:0 
  at IronScheme.Runtime.R6RS.Exceptions.WithClrExceptionHandler (System.Object handler, System.Object thunk) <0x48e6928 + 0x00049> in <filename unknown>:0

[christoff-buerger]

siple/examples/incorrect: assertions.siple, boolean_arithmetics.siple, control_flow.siple, integer_and_real_arithmetics.siple, relational_arithmetics.siple, scopes.siple:

Unhandled CLR exception during evaluation:
CLR Exception: System.InvalidCastException
System.InvalidCastException: Specified cast is not valid.
  at racr.core.node-find-child (System.Object n, System.Object context-name) <0x53329a0 + 0x00151> in <filename unknown>:0 
  at racr.core.ast-child (System.Object i, System.Object n) <0x53323a0 + 0x00056> in <filename unknown>:0 
  at siple.well-formedness.specify-well-formedness#1#anon#1#2#3#4#5#6#7#8#9$394 (IronScheme.Scripting.CodeContext $context, System.Object n) <0x5331c80 + 0x000ac> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object[] args) <0x4802d08 + 0x00331> in <filename unknown>:0 
  at racr.core.att-value#anon#1#2#3#4#5#6$626 (IronScheme.Scripting.CodeContext $context) <0x53290a0 + 0x000b5> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x487d8f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.exceptions::dynamic-wind (System.Object in, System.Object proc, System.Object out) <0x4864970 + 0x000f8> in <filename unknown>:0 
  at racr.core.att-value+ (System.Object name, System.Object n, System.Object args) <0x5324800 + 0x00acf> in <filename unknown>:0 
  at siple.interpreter.weave-interpreter#anon#1$413 (IronScheme.Scripting.CodeContext $context, System.Object n, System.Object args) <0x5331a50 + 0x00059> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object[] args) <0x4802d08 + 0x00331> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+VarArgClosure.Call (System.Object[] args) <0x48019d0 + 0x0014e> in <filename unknown>:0 
  at racr.core.ast-annotation-set!#anon$636 (IronScheme.Scripting.CodeContext $context, System.Object args) <0x5331850 + 0x0008a> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object[] args) <0x4802d08 + 0x00331> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+VarArgClosure.Call (System.Object[] args) <0x48019d0 + 0x0014e> in <filename unknown>:0 
  at IronScheme.Runtime.Closure.Call (System.Object arg1) <0x4801750 + 0x00046> in <filename unknown>:0 
  at siple.main.siple-interpret#anon#1$444 (IronScheme.Scripting.CodeContext $context) <0x5304640 + 0x000c1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x487d8f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.exceptions::dynamic-wind (System.Object in, System.Object proc, System.Object out) <0x4864970 + 0x000f8> in <filename unknown>:0 
  at siple.main.siple-interpret (System.Object input, System.Object output-port) <0x5304000 + 0x001f8> in <filename unknown>:0 
  at eval-core(005).::dummy#anon$5 (IronScheme.Scripting.CodeContext $context) <0x53039b0 + 0x00035> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x487d8f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.exceptions::with-exception-handlers#1#anon#1$1838 (IronScheme.Scripting.CodeContext $context) <0x4963970 + 0x0004b> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x487d8f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.exceptions::dynamic-wind (System.Object in, System.Object proc, System.Object out) <0x4864970 + 0x000f8> in <filename unknown>:0 
  at eval-core(005).::dummy$3 (System.Object k) <0x5303720 + 0x00133> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4834990 + 0x00036> in <filename unknown>:0 
  at IronScheme.Runtime.Builtins.CallWithCurrentContinuation (System.Object fc1) <0x4962b10 + 0x00093> in <filename unknown>:0 
  at eval-core(005).$2 () <0x53032e0 + 0x000ce> in <filename unknown>:0 
  at IronScheme.Scripting.ScriptCode.Run (IronScheme.Scripting.CodeContext codeContext, Boolean tryEvaluate) <0x48e5e60 + 0x0008d> in <filename unknown>:0 
  at IronScheme.Scripting.ScriptCode.Run (IronScheme.Scripting.ScriptModule module) <0x48e5cd0 + 0x00071> in <filename unknown>:0 
  at IronScheme.Runtime.Builtins+<>c__DisplayClass51_1.<CompileCore>b__1 () <0x48e5bc0 + 0x00027> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x487d8f8 + 0x0002c> in <filename unknown>:0 
  at #.psyntax.expander::compile-r6rs-top-level#anon#1#2$2646 (IronScheme.Scripting.CodeContext $context) <0x4972f30 + 0x00087> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x487d8f8 + 0x0002c> in <filename unknown>:0 
  at #.psyntax.main::load-r6rs-top-level#1#anon#1#2#3#4#5#6$2688 (IronScheme.Scripting.CodeContext $context) <0x496c4f0 + 0x00053> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x487d8f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.exceptions::dynamic-wind (System.Object in, System.Object proc, System.Object out) <0x4864970 + 0x000f8> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x487d8f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.exceptions::dynamic-wind (System.Object in, System.Object proc, System.Object out) <0x4864970 + 0x000f8> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object[] args) <0x4802d08 + 0x00331> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+VarArgClosure.Call (System.Object[] args) <0x48019d0 + 0x0014e> in <filename unknown>:0 
  at #.psyntax.main::load#1$2662 (IronScheme.Scripting.CodeContext $context) <0x4963af0 + 0x000d3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x487d8f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.exceptions::with-exception-handlers#1#anon#1$1838 (IronScheme.Scripting.CodeContext $context) <0x4963970 + 0x0004b> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x487d8f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.exceptions::dynamic-wind (System.Object in, System.Object proc, System.Object out) <0x4864970 + 0x000f8> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4834990 + 0x00036> in <filename unknown>:0 
  at IronScheme.Runtime.Builtins.CallWithCurrentContinuation (System.Object fc1) <0x4962b10 + 0x00093> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x487d8f8 + 0x0002c> in <filename unknown>:0 
  at IronScheme.Runtime.R6RS.Exceptions.WithClrExceptionHandler (System.Object handler, System.Object thunk) <0x4962928 + 0x00049> in <filename unknown>:0

[christoff-buerger]

composed-petrinets/examples/purchase-processing.scm:

Stack overflow in unmanaged: IP: 0x3096e9, fault addr: 0xb02a3fec
[ERROR] FATAL UNHANDLED EXCEPTION: System.StackOverflowException: The requested operation caused a stack overflow.
  at (wrapper managed-to-native) System.String:FastAllocateString (int)
  at System.String.CtorCharArrayStartLength (System.Char[] value, Int32 startIndex, Int32 length) <0x28f0ae0 + 0x00056> in <filename unknown>:0 
  at System.String.CreateString (System.Char[] val, Int32 startIndex, Int32 length) <0x28f7470 + 0x00032> in <filename unknown>:0 
  at (wrapper managed-to-managed) System.String:.ctor (char[],int,int)
  at System.NumberFormatter.FormatDecimal (Int32 precision, System.Globalization.NumberFormatInfo nfi) <0x2b2d760 + 0x00094> in <filename unknown>:0 
  at System.NumberFormatter.IntegerToString (System.String format, IFormatProvider fp) <0x2b2ce30 + 0x000e0> in <filename unknown>:0 
  at System.NumberFormatter.NumberToString (System.String format, Int32 value, IFormatProvider fp) <0x2b2ca30 + 0x0005e> in <filename unknown>:0 
  at System.Number.FormatInt32 (Int32 value, System.String format, System.Globalization.NumberFormatInfo info) <0x28678a0 + 0x0002b> in <filename unknown>:0 
  at System.Int32.ToString () <0x2845380 + 0x00038> in <filename unknown>:0 
  at System.ParseNumbers.IntToString (Int32 value, Int32 toBase, Int32 width, Char paddingChar, Int32 flags) <0x29ec180 + 0x00087> in <filename unknown>:0 
  at System.Convert.ToString (Int32 value, Int32 toBase) <0x27d4f20 + 0x00051> in <filename unknown>:0 
  at #.ironscheme.numbers::fixnum->string (System.Object num, System.Object radix) <0x513bee0 + 0x000c3> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x00080> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x48caed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4fd3660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x48caed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4fd3660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x48caed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4fd3660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4fd5b68 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x4869168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x4fd5a30 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48c98f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4fd55a0 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x48caed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4fd3660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x48caed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4fd3660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4fd5b68 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x4869168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x4fd5a30 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48c98f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4fd55a0 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x48caed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4fd3660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x48caed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4fd3660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4fd5b68 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x4869168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x4fd5a30 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48c98f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4fd55a0 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x48caed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4fd3660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x48caed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4fd3660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4fd5b68 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x4869168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x4fd5a30 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48c98f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4fd55a0 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x48caed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4fd3660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x48caed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4fd3660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4fd5b68 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x4869168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x4fd5a30 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48c98f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4fd55a0 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x48caed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4fd3660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x48caed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4fd3660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4fd5b68 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x4869168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x4fd5a30 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48c98f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4fd55a0 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x48caed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4fd3660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x48caed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4fd3660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4fd5b68 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x4869168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x4fd5a30 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48c98f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4fd55a0 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x48caed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4fd3660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x48caed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4fd3660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4fd5b68 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x4869168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x4fd5a30 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48c98f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4fd55a0 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x48caed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4fd3660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x48caed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4fd3660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4fd5b68 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x4869168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x4fd5a30 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48c98f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4fd55a0 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x48caed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4fd3660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x48caed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4fd3660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4fd5b68 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x4869168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x4fd5a30 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48c98f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4fd55a0 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x48caed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4fd3660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x48caed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4fd3660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4fd5b68 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x4869168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x4fd5a30 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48c98f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4fd55a0 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x48caed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4fd3660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x48caed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4fd3660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4fd5b68 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x4869168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x4fd5a30 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48c98f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4fd55a0 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x48caed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4fd3660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x48caed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4fd3660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4fd5b68 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x4869168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x4fd5a30 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48c98f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4fd55a0 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x48caed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4fd3660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x48caed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4fd3660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4fd5b68 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x4869168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x4fd5a30 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48c98f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4fd55a0 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x48caed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4fd3660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x48caed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4fd3660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4fd5b68 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x4869168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x4fd5a30 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48c98f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4fd55a0 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x48caed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4fd3660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x48caed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4fd3660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4fd5b68 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x4869168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x4fd5a30 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48c98f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4fd55a0 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x48caed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4fd3660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x48caed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4fd3660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4fd5b68 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x4869168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x4fd5a30 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48c98f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4fd55a0 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x48caed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4fd3660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x48caed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4fd3660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4fd5b68 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x4869168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x4fd5a30 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48c98f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4fd55a0 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x48caed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4fd3660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x48caed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4fd3660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4fd5b68 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x4869168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x4fd5a30 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48c98f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4fd55a0 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x48caed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4fd3660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x48caed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4fd3660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4fd5b68 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x4869168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x4fd5a30 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48c98f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4fd55a0 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x48caed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4fd3660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x48caed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4fd3660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4fd5b68 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x4869168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x4fd5a30 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48c98f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4fd55a0 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x48caed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4fd3660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x48caed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4fd3660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4fd5b68 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x4869168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x4fd5a30 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48c98f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4fd55a0 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x48caed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4fd3660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x48caed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4fd3660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4fd5b68 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x4869168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x4fd5a30 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48c98f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4fd55a0 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x48caed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4fd3660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x48caed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4fd3660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4fd5b68 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x4869168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x4fd5a30 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48c98f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4fd55a0 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x48caed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4fd3660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x48caed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4fd3660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4fd5b68 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x4869168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x4fd5a30 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48c98f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4fd55a0 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x48caed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4fd3660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x48caed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4fd3660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4fd5b68 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x4869168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x4fd5a30 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48c98f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4fd55a0 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x48caed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4fd3660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x48caed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4fd3660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4fd5b68 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x4869168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x4fd5a30 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48c98f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4fd55a0 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x48caed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4fd3660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x48caed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4fd3660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4fd5b68 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x4869168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x4fd5a30 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48c98f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4fd55a0 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x48caed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4fd3660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x48caed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4fd3660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4fd5b68 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x4869168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x4fd5a30 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48c98f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4fd55a0 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x48caed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4fd3660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x48caed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4fd3660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4fd5b68 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x4869168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x4fd5a30 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48c98f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4fd55a0 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x48caed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4fd3660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x48caed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4fd3660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4fd5b68 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x4869168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x4fd5a30 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48c98f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4fd55a0 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x48caed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4fd3660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x48caed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4fd3660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4fd5b68 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x4869168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x4fd5a30 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48c98f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4fd55a0 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x48caed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4fd3660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x48caed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4fd3660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4fd5b68 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x4869168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x4fd5a30 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48c98f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4fd55a0 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x48caed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4fd3660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x48caed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4fd3660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4fd5b68 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x4869168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x4fd5a30 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48c98f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4fd55a0 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x48caed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4fd3660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x48caed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4fd3660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4fd5b68 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x4869168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x4fd5a30 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48c98f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4fd55a0 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x48caed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4fd3660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x48caed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4fd3660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4fd5b68 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x4869168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x4fd5a30 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48c98f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4fd55a0 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x48caed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4fd3660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x48caed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4fd3660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4fd5b68 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x4869168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x4fd5a30 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48c98f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4fd55a0 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x48caed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4fd3660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x48caed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4fd3660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4fd5b68 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x4869168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x4fd5a30 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48c98f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4fd55a0 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x48caed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4fd3660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x48caed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4fd3660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4fd5b68 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x4869168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x4fd5a30 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48c98f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4fd55a0 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x48caed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4fd3660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x48caed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4fd3660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4fd5b68 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x4869168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x4fd5a30 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48c98f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4fd55a0 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x48caed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4fd3660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x48caed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4fd3660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4fd5b68 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x4869168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x4fd5a30 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48c98f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4fd55a0 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x48caed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4fd3660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x48caed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4fd3660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4fd5b68 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x4869168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x4fd5a30 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48c98f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4fd55a0 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x48caed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4fd3660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x48caed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4fd3660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4fd5b68 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x4869168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x4fd5a30 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48c98f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4fd55a0 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x48caed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4fd3660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x48caed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4fd3660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4fd5b68 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x4869168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x4fd5a30 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48c98f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4fd55a0 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x48caed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4fd3660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x48caed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4fd3660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4fd5b68 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x4869168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x4fd5a30 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48c98f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4fd55a0 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x48caed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4fd3660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x48caed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4fd3660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4fd5b68 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x4869168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x4fd5a30 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48c98f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4fd55a0 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x48caed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4fd3660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x48caed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4fd3660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4fd5b68 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x4869168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x4fd5a30 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48c98f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4fd55a0 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x48caed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4fd3660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x48caed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4fd3660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4fd5b68 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x4869168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x4fd5a30 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48c98f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4fd55a0 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x48caed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4fd3660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4880990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x48caed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4fd3660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4fd5b68 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x4869168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x4fd5a30 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48c98f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4fd55a0 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x48dae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x49d0770 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x49d0420 + 0x0011f> in <filename unknown>:0

[christoff-buerger]

composed-petrinets/examples/runtime-structure-example-slide.scm:

[ERROR] FATAL UNHANDLED EXCEPTION: System.StackOverflowException: The requested operation caused a stack overflow.
  at System.Globalization.TextInfo.get_IsAsciiCasingSameAsInvariant () <0x24a9960 + 0x0000b> in <filename unknown>:0 
  at System.Globalization.TextInfo.ToLower (Char c) <0x24a9710 + 0x00030> in <filename unknown>:0 
  at System.Char.ToLower (Char c, System.Globalization.CultureInfo culture) <0x240ea30 + 0x00033> in <filename unknown>:0 
  at System.Text.RegularExpressions.RegexBoyerMoore.Scan (System.String text, Int32 index, Int32 beglimit, Int32 endlimit) <0x3c39a00 + 0x000db> in <filename unknown>:0 
  at System.Text.RegularExpressions.RegexInterpreter.FindFirstChar () <0x3c39200 + 0x000d7> in <filename unknown>:0 
  at System.Text.RegularExpressions.RegexRunner.Scan (System.Text.RegularExpressions.Regex regex, System.String text, Int32 textbeg, Int32 textend, Int32 textstart, Int32 prevlen, Boolean quick, TimeSpan timeout) <0x3c38828 + 0x001d4> in <filename unknown>:0 
  at System.Text.RegularExpressions.Regex.Run (Boolean quick, Int32 prevlen, System.String input, Int32 beginning, Int32 length, Int32 startat) <0x3c37ce0 + 0x00144> in <filename unknown>:0 
  at System.Text.RegularExpressions.Regex.Match (System.String input, Int32 startat) <0x3c377b0 + 0x00046> in <filename unknown>:0 
  at System.Text.RegularExpressions.RegexReplacement.Replace (System.Text.RegularExpressions.MatchEvaluator evaluator, System.Text.RegularExpressions.Regex regex, System.String input, Int32 count, Int32 startat) <0x3c372a0 + 0x00057> in <filename unknown>:0 
  at System.Text.RegularExpressions.Regex.Replace (System.String input, System.Text.RegularExpressions.MatchEvaluator evaluator, Int32 count, Int32 startat) <0x3c36df0 + 0x00038> in <filename unknown>:0 
  at System.Text.RegularExpressions.Regex.Replace (System.String input, System.Text.RegularExpressions.MatchEvaluator evaluator) <0x3c36c60 + 0x00045> in <filename unknown>:0 
  at IronScheme.Scripting.SymbolTable.StringToId (System.String field) <0x3c36a08 + 0x000cb> in <filename unknown>:0 
  at IronScheme.Scripting.SymbolTable.StringToObject (System.String name) <0x17ee6b8 + 0x0001f> in <filename unknown>:0 
  at #.ironscheme.base::string->symbol (System.Object str) <0x4850b90 + 0x00052> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49ede70 + 0x00157> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49f0350 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47f9168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49f0218 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48598f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49efd80 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49ede70 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49ede70 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49f0350 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47f9168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49f0218 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48598f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49efd80 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49ede70 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49ede70 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49f0350 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47f9168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49f0218 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48598f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49efd80 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49ede70 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49ede70 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49f0350 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47f9168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49f0218 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48598f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49efd80 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49ede70 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49ede70 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49f0350 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47f9168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49f0218 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48598f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49efd80 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49ede70 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49ede70 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49f0350 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47f9168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49f0218 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48598f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49efd80 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49ede70 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49ede70 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49f0350 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47f9168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49f0218 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48598f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49efd80 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49ede70 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49ede70 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49f0350 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47f9168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49f0218 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48598f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49efd80 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49ede70 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49ede70 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49f0350 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47f9168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49f0218 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48598f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49efd80 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49ede70 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49ede70 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49f0350 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47f9168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49f0218 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48598f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49efd80 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49ede70 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49ede70 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49f0350 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47f9168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49f0218 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48598f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49efd80 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49ede70 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49ede70 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49f0350 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47f9168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49f0218 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48598f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49efd80 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49ede70 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49ede70 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49f0350 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47f9168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49f0218 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48598f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49efd80 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49ede70 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49ede70 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49f0350 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47f9168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49f0218 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48598f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49efd80 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49ede70 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49ede70 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49f0350 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47f9168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49f0218 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48598f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49efd80 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49ede70 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49ede70 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49f0350 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47f9168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49f0218 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48598f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49efd80 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49ede70 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49ede70 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49f0350 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47f9168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49f0218 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48598f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49efd80 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49ede70 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49ede70 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49f0350 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47f9168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49f0218 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48598f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49efd80 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49ede70 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49ede70 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49f0350 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47f9168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49f0218 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48598f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49efd80 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49ede70 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49ede70 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49f0350 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47f9168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49f0218 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48598f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49efd80 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49ede70 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49ede70 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49f0350 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47f9168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49f0218 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48598f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49efd80 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49ede70 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49ede70 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49f0350 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47f9168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49f0218 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48598f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49efd80 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49ede70 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49ede70 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49f0350 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47f9168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49f0218 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48598f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49efd80 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49ede70 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49ede70 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49f0350 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47f9168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49f0218 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48598f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49efd80 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49ede70 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49ede70 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49f0350 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47f9168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49f0218 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48598f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49efd80 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49ede70 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49ede70 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49f0350 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47f9168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49f0218 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48598f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49efd80 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49ede70 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49ede70 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49f0350 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47f9168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49f0218 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48598f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49efd80 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49ede70 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49ede70 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49f0350 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47f9168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49f0218 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48598f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49efd80 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49ede70 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49ede70 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49f0350 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47f9168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49f0218 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48598f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49efd80 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49ede70 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49ede70 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49f0350 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47f9168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49f0218 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48598f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49efd80 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49ede70 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49ede70 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49f0350 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47f9168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49f0218 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48598f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49efd80 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49ede70 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49ede70 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49f0350 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47f9168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49f0218 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48598f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49efd80 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49ede70 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49ede70 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49f0350 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47f9168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49f0218 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48598f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49efd80 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49ede70 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49ede70 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49f0350 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47f9168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49f0218 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48598f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49efd80 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49ede70 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49ede70 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49f0350 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47f9168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49f0218 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48598f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49efd80 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49ede70 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49ede70 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49f0350 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47f9168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49f0218 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48598f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49efd80 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49ede70 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49ede70 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49f0350 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47f9168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49f0218 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48598f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49efd80 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49ede70 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49ede70 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49f0350 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47f9168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49f0218 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48598f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49efd80 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49ede70 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49ede70 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49f0350 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47f9168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49f0218 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48598f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49efd80 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49ede70 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49ede70 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49f0350 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47f9168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49f0218 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48598f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49efd80 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49ede70 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49ede70 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49f0350 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47f9168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49f0218 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48598f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49efd80 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49ede70 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49ede70 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49f0350 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47f9168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49f0218 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48598f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49efd80 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49ede70 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49ede70 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49f0350 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47f9168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49f0218 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48598f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49efd80 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49ede70 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49ede70 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49f0350 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47f9168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49f0218 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48598f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49efd80 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49ede70 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49ede70 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49f0350 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47f9168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49f0218 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48598f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49efd80 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49ede70 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49ede70 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49f0350 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47f9168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49f0218 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48598f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49efd80 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49ede70 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49ede70 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49f0350 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47f9168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49f0218 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48598f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49efd80 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49ede70 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49ede70 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49f0350 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47f9168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49f0218 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48598f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49efd80 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49ede70 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49ede70 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49f0350 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x47f9168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x49f0218 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48598f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x49efd80 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49ede70 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4810990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x485aed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x49ede70 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x486ae80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x498c230 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x498bed0 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x49f0350 + 0x000cf> in <filename unknown>:0

[christoff-buerger]

composed-petrinets/examples/syntax-tests.scm:

[ERROR] FATAL UNHANDLED EXCEPTION: System.StackOverflowException: The requested operation caused a stack overflow.
  at System.Globalization.CultureInfo.get_TextInfo () <0x25f0810 + 0x0000b> in <filename unknown>:0 
  at System.Char.ToLower (Char c, System.Globalization.CultureInfo culture) <0x2393a30 + 0x00023> in <filename unknown>:0 
  at System.Text.RegularExpressions.RegexBoyerMoore.Scan (System.String text, Int32 index, Int32 beglimit, Int32 endlimit) <0x3c19a00 + 0x000db> in <filename unknown>:0 
  at System.Text.RegularExpressions.RegexInterpreter.FindFirstChar () <0x3c19200 + 0x000d7> in <filename unknown>:0 
  at System.Text.RegularExpressions.RegexRunner.Scan (System.Text.RegularExpressions.Regex regex, System.String text, Int32 textbeg, Int32 textend, Int32 textstart, Int32 prevlen, Boolean quick, TimeSpan timeout) <0x3c18828 + 0x001d4> in <filename unknown>:0 
  at System.Text.RegularExpressions.Regex.Run (Boolean quick, Int32 prevlen, System.String input, Int32 beginning, Int32 length, Int32 startat) <0x3c17ce0 + 0x00144> in <filename unknown>:0 
  at System.Text.RegularExpressions.Regex.Match (System.String input, Int32 startat) <0x3c177b0 + 0x00046> in <filename unknown>:0 
  at System.Text.RegularExpressions.RegexReplacement.Replace (System.Text.RegularExpressions.MatchEvaluator evaluator, System.Text.RegularExpressions.Regex regex, System.String input, Int32 count, Int32 startat) <0x3c172a0 + 0x00057> in <filename unknown>:0 
  at System.Text.RegularExpressions.Regex.Replace (System.String input, System.Text.RegularExpressions.MatchEvaluator evaluator, Int32 count, Int32 startat) <0x3c16df0 + 0x00038> in <filename unknown>:0 
  at System.Text.RegularExpressions.Regex.Replace (System.String input, System.Text.RegularExpressions.MatchEvaluator evaluator) <0x3c16c60 + 0x00045> in <filename unknown>:0 
  at IronScheme.Scripting.SymbolTable.StringToId (System.String field) <0x3c16a08 + 0x000cb> in <filename unknown>:0 
  at IronScheme.Scripting.SymbolTable.StringToObject (System.String name) <0x37746b8 + 0x0001f> in <filename unknown>:0 
  at #.ironscheme.base::string->symbol (System.Object str) <0x47b4b90 + 0x00052> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4774990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.base::vector-map (System.Object p, System.Object vec) <0x4bc5c70 + 0x0016f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::get-field-pairs (System.Object rtd, System.Object rec) <0x4bc56c0 + 0x00013> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4bc4660 + 0x0020b> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4774990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x47beed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4bc4660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4774990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x47beed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4bc4660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4bc6b68 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x475d168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x4bc6a30 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x47bd8f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4bc65a0 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4774990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x47beed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4bc4660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4774990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x47beed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4bc4660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4bc6b68 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x475d168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x4bc6a30 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x47bd8f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4bc65a0 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4774990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x47beed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4bc4660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4774990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x47beed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4bc4660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4bc6b68 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x475d168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x4bc6a30 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x47bd8f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4bc65a0 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4774990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x47beed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4bc4660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4774990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x47beed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4bc4660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4bc6b68 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x475d168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x4bc6a30 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x47bd8f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4bc65a0 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4774990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x47beed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4bc4660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4774990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x47beed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4bc4660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4bc6b68 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x475d168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x4bc6a30 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x47bd8f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4bc65a0 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4774990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x47beed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4bc4660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4774990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x47beed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4bc4660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4bc6b68 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x475d168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x4bc6a30 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x47bd8f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4bc65a0 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4774990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x47beed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4bc4660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4774990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x47beed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4bc4660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4bc6b68 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x475d168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x4bc6a30 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x47bd8f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4bc65a0 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4774990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x47beed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4bc4660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4774990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x47beed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4bc4660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4bc6b68 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x475d168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x4bc6a30 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x47bd8f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4bc65a0 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4774990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x47beed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4bc4660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4774990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x47beed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4bc4660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4bc6b68 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x475d168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x4bc6a30 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x47bd8f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4bc65a0 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4774990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x47beed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4bc4660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4774990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x47beed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4bc4660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4bc6b68 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x475d168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x4bc6a30 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x47bd8f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4bc65a0 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4774990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x47beed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4bc4660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4774990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x47beed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4bc4660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4bc6b68 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x475d168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x4bc6a30 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x47bd8f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4bc65a0 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4774990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x47beed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4bc4660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4774990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x47beed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4bc4660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4bc6b68 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x475d168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x4bc6a30 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x47bd8f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4bc65a0 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4774990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x47beed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4bc4660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4774990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x47beed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4bc4660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4bc6b68 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x475d168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x4bc6a30 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x47bd8f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4bc65a0 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4774990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x47beed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4bc4660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4774990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x47beed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4bc4660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4bc6b68 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x475d168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x4bc6a30 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x47bd8f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4bc65a0 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4774990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x47beed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4bc4660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4774990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x47beed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4bc4660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4bc6b68 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x475d168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x4bc6a30 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x47bd8f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4bc65a0 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4774990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x47beed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4bc4660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4774990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x47beed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4bc4660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4bc6b68 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x475d168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x4bc6a30 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x47bd8f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4bc65a0 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4774990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x47beed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4bc4660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4774990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x47beed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4bc4660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4bc6b68 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x475d168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x4bc6a30 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x47bd8f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4bc65a0 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4774990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x47beed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4bc4660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4774990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x47beed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4bc4660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4bc6b68 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x475d168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x4bc6a30 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x47bd8f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4bc65a0 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4774990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x47beed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4bc4660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4774990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x47beed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4bc4660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4bc6b68 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x475d168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x4bc6a30 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x47bd8f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4bc65a0 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4774990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x47beed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4bc4660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4774990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x47beed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4bc4660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4bc6b68 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x475d168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x4bc6a30 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x47bd8f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4bc65a0 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4774990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x47beed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4bc4660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4774990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x47beed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4bc4660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4bc6b68 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x475d168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x4bc6a30 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x47bd8f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4bc65a0 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4774990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x47beed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4bc4660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4774990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x47beed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4bc4660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4bc6b68 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x475d168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x4bc6a30 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x47bd8f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4bc65a0 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4774990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x47beed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4bc4660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4774990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x47beed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4bc4660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4bc6b68 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x475d168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x4bc6a30 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x47bd8f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4bc65a0 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4774990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x47beed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4bc4660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4774990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x47beed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4bc4660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4bc6b68 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x475d168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x4bc6a30 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x47bd8f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4bc65a0 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4774990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x47beed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4bc4660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4774990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x47beed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4bc4660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4bc6b68 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x475d168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x4bc6a30 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x47bd8f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4bc65a0 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4774990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x47beed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4bc4660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4774990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x47beed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4bc4660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4bc6b68 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x475d168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x4bc6a30 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x47bd8f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4bc65a0 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4774990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x47beed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4bc4660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4774990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x47beed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4bc4660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4bc6b68 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x475d168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x4bc6a30 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x47bd8f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4bc65a0 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4774990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x47beed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4bc4660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4774990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x47beed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4bc4660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4bc6b68 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x475d168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x4bc6a30 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x47bd8f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4bc65a0 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4774990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x47beed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4bc4660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4774990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x47beed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4bc4660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4bc6b68 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x475d168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x4bc6a30 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x47bd8f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4bc65a0 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4774990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x47beed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4bc4660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4774990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x47beed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4bc4660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4bc6b68 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x475d168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x4bc6a30 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x47bd8f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4bc65a0 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4774990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x47beed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4bc4660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4774990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x47beed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4bc4660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4bc6b68 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x475d168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x4bc6a30 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x47bd8f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4bc65a0 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4774990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x47beed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4bc4660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4774990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x47beed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4bc4660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4bc6b68 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x475d168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x4bc6a30 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x47bd8f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4bc65a0 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4774990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x47beed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4bc4660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4774990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x47beed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4bc4660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4bc6b68 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x475d168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x4bc6a30 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x47bd8f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4bc65a0 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4774990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x47beed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4bc4660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4774990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x47beed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4bc4660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4bc6b68 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x475d168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x4bc6a30 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x47bd8f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4bc65a0 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4774990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x47beed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4bc4660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4774990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x47beed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4bc4660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4bc6b68 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x475d168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x4bc6a30 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x47bd8f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4bc65a0 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4774990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x47beed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4bc4660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4774990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x47beed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4bc4660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4bc6b68 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x475d168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x4bc6a30 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x47bd8f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4bc65a0 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4774990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x47beed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4bc4660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4774990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x47beed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4bc4660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4bc6b68 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x475d168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x4bc6a30 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x47bd8f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4bc65a0 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4774990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x47beed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4bc4660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4774990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x47beed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4bc4660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4bc6b68 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x475d168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x4bc6a30 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x47bd8f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4bc65a0 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4774990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x47beed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4bc4660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4774990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x47beed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4bc4660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4bc6b68 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x475d168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x4bc6a30 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x47bd8f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4bc65a0 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4774990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x47beed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4bc4660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4774990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x47beed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4bc4660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4bc6b68 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x475d168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x4bc6a30 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x47bd8f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4bc65a0 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4774990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x47beed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4bc4660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4774990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x47beed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4bc4660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4bc6b68 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x475d168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x4bc6a30 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x47bd8f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4bc65a0 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4774990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x47beed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4bc4660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4774990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x47beed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4bc4660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4bc6b68 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x475d168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x4bc6a30 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x47bd8f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4bc65a0 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4774990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x47beed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4bc4660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4774990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x47beed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4bc4660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4bc6b68 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x475d168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x4bc6a30 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x47bd8f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4bc65a0 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4774990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x47beed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4bc4660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4774990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x47beed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4bc4660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4bc6b68 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x475d168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x4bc6a30 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x47bd8f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4bc65a0 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4774990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x47beed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4bc4660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4774990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x47beed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4bc4660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4bc6b68 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x475d168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x4bc6a30 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x47bd8f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4bc65a0 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4774990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x47beed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4bc4660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4774990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x47beed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4bc4660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4bc6b68 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x475d168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x4bc6a30 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x47bd8f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4bc65a0 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4774990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x47beed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4bc4660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4774990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x47beed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4bc4660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4bc6b68 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x475d168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x4bc6a30 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x47bd8f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4bc65a0 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4774990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x47beed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4bc4660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4774990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x47beed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4bc4660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4bc6b68 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x475d168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x4bc6a30 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x47bd8f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4bc65a0 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4774990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x47beed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4bc4660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x4774990 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x47beed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4bc4660 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x48c4020 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1930 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4bc6b68 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x475d168 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1929 (IronScheme.Scripting.CodeContext $context) <0x4bc6a30 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x47bd8f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4bc65a0 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x47cee80 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x48c4370 + 0x000ad> in <filename unknown>:0

[christoff-buerger]

Deactivated Mono's LLVM backend as it is more buggy than the JIT backend.

[christoff-buerger]

Note: All tests are on OS X with

Mono JIT compiler version 4.2.2 (explicit/996df3c Wed Jan 20 00:19:48 EST 2016)
Copyright (C) 2002-2014 Novell, Inc, Xamarin Inc and Contributors. www.mono-project.com
    TLS:           normal
    SIGSEGV:       altstack
    Notification:  kqueue
    Architecture:  x86
    Disabled:      none
    Misc:          softdebug 
    LLVM:          yes(3.6.0svn-mono-(detached/a173357)
    GC:            sgen

[christoff-buerger]

According to leppie/IronScheme#11, the problem is a very naive equal-hash implementation:

Ahhhhh, found the problem! equal-hash is at fault. It is really terribly implemented, it prints out the key and does a string-hash O_O.

Since keys can be cyclic data structures (e.g., in case of AST nodes), this explains the stack overflow exceptions.

[christoff-buerger]

The reason why tests/ast-construction.scm and tests/patterns.scm fail is not clear and needs further investigations.

Patterns fail, because the valid-type? attribute of the pattern language expects a type argument that is an AST symbol (symbol record). Such records can by cyclic, because of their non-terminal? field. Thus, the valid-type? attribute is cached with potential cyclic records as keys.

[christoff-buerger]

leppie/IronScheme@07f20bd fixed equal-hash in case of keys that are circular objects, like AST nodes. For this reason the composed Petri nets example and the tests/patterns.scm test are now working with IronScheme.

Only the tests/ast-construction.scm test still fails.

[christoff-buerger]

IMPORTANT: This comment and the following stack traces regard only the LLVM-based Mono version, not the JIT-based default.

I tested Mono's LLVM backend, but that is no good at all! First, it is much slower. It also fails the following tests besides tests/ast-construction.scm:

• tests/patterns.scm
• All activity diagrams with input variables (test5.ad, test6_false.ad, test6_true.ad, testperformance_variant3_2.ad). Interestingly it passes the very big diagrams like testperformance_variant3_1.ad; the problem are the input variables.
• All SiPLE programs.

The errors are very interesting however, and may hint to further bugs (either Mono LLVM or IronScheme).

The complete exceptions are posted in the following comments.

[christoff-buerger]

tests/ast-construction.scm:

Stack overflow in unmanaged: IP: 0x24cd7c, fault addr: 0xb02a3ffc
[ERROR] FATAL UNHANDLED EXCEPTION: System.StackOverflowException: The requested operation caused a stack overflow.
  at (wrapper managed-to-native) System.String:FastAllocateString (int)
  at System.String.CtorCharArrayStartLength (System.Char[] value, Int32 startIndex, Int32 length) <0x256bae0 + 0x00056> in <filename unknown>:0 
  at System.String.CreateString (System.Char[] val, Int32 startIndex, Int32 length) <0x2572470 + 0x00032> in <filename unknown>:0 
  at (wrapper managed-to-managed) System.String:.ctor (char[],int,int)
  at System.NumberFormatter.FormatDecimal (Int32 precision, System.Globalization.NumberFormatInfo nfi) <0x27a8760 + 0x00094> in <filename unknown>:0 
  at System.NumberFormatter.IntegerToString (System.String format, IFormatProvider fp) <0x27a7e30 + 0x000e0> in <filename unknown>:0 
  at System.NumberFormatter.NumberToString (System.String format, Int32 value, IFormatProvider fp) <0x27a7a30 + 0x0005e> in <filename unknown>:0 
  at System.Number.FormatInt32 (Int32 value, System.String format, System.Globalization.NumberFormatInfo info) <0x24e28a0 + 0x0002b> in <filename unknown>:0 
  at System.Int32.ToString () <0x24c0380 + 0x00038> in <filename unknown>:0 
  at System.ParseNumbers.IntToString (Int32 value, Int32 toBase, Int32 width, Char paddingChar, Int32 flags) <0x2667180 + 0x00087> in <filename unknown>:0 
  at System.Convert.ToString (Int32 value, Int32 toBase) <0x244ff20 + 0x00051> in <filename unknown>:0 
  at #.ironscheme.numbers::fixnum->string (System.Object num, System.Object radix) <0x4e46320 + 0x000c3> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x00080> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x482c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4871ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4e43ca0 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x482c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4871ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4e43ca0 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x482c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4871ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4e43ca0 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1940 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4e46fd0 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x4810568 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1939 (IronScheme.Scripting.CodeContext $context) <0x4e46e98 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48708f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4e46a00 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x482c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4871ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4e43ca0 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x482c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4871ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4e43ca0 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1940 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4e46fd0 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x4810568 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1939 (IronScheme.Scripting.CodeContext $context) <0x4e46e98 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48708f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4e46a00 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x482c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4871ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4e43ca0 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x482c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4871ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4e43ca0 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1940 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4e46fd0 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x4810568 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1939 (IronScheme.Scripting.CodeContext $context) <0x4e46e98 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48708f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4e46a00 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x482c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4871ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4e43ca0 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x482c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4871ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4e43ca0 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1940 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4e46fd0 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x4810568 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1939 (IronScheme.Scripting.CodeContext $context) <0x4e46e98 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48708f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4e46a00 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x482c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4871ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4e43ca0 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x482c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4871ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4e43ca0 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1940 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4e46fd0 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x4810568 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1939 (IronScheme.Scripting.CodeContext $context) <0x4e46e98 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48708f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4e46a00 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x482c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4871ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4e43ca0 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x482c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4871ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4e43ca0 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1940 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4e46fd0 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x4810568 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1939 (IronScheme.Scripting.CodeContext $context) <0x4e46e98 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48708f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4e46a00 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x482c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4871ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4e43ca0 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x482c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4871ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4e43ca0 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1940 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4e46fd0 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x4810568 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1939 (IronScheme.Scripting.CodeContext $context) <0x4e46e98 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48708f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4e46a00 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x482c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4871ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4e43ca0 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x482c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4871ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4e43ca0 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1940 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4e46fd0 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x4810568 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1939 (IronScheme.Scripting.CodeContext $context) <0x4e46e98 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48708f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4e46a00 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x482c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4871ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4e43ca0 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x482c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4871ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4e43ca0 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1940 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4e46fd0 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x4810568 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1939 (IronScheme.Scripting.CodeContext $context) <0x4e46e98 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48708f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4e46a00 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x482c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4871ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4e43ca0 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x482c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4871ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4e43ca0 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1940 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4e46fd0 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x4810568 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1939 (IronScheme.Scripting.CodeContext $context) <0x4e46e98 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48708f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4e46a00 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x482c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4871ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4e43ca0 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x482c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4871ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4e43ca0 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1940 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4e46fd0 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x4810568 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1939 (IronScheme.Scripting.CodeContext $context) <0x4e46e98 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48708f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4e46a00 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x482c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4871ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4e43ca0 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x482c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4871ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4e43ca0 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1940 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4e46fd0 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x4810568 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1939 (IronScheme.Scripting.CodeContext $context) <0x4e46e98 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48708f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4e46a00 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x482c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4871ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4e43ca0 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x482c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4871ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4e43ca0 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1940 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4e46fd0 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x4810568 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1939 (IronScheme.Scripting.CodeContext $context) <0x4e46e98 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48708f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4e46a00 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x482c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4871ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4e43ca0 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x482c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4871ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4e43ca0 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1940 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4e46fd0 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x4810568 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1939 (IronScheme.Scripting.CodeContext $context) <0x4e46e98 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48708f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4e46a00 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x482c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4871ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4e43ca0 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x482c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4871ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4e43ca0 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1940 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4e46fd0 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x4810568 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1939 (IronScheme.Scripting.CodeContext $context) <0x4e46e98 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48708f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4e46a00 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x482c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4871ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4e43ca0 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x482c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4871ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4e43ca0 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1940 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4e46fd0 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x4810568 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1939 (IronScheme.Scripting.CodeContext $context) <0x4e46e98 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48708f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4e46a00 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x482c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4871ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4e43ca0 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x482c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4871ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4e43ca0 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1940 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4e46fd0 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x4810568 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1939 (IronScheme.Scripting.CodeContext $context) <0x4e46e98 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48708f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4e46a00 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x482c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4871ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4e43ca0 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x482c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4871ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4e43ca0 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1940 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4e46fd0 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x4810568 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1939 (IronScheme.Scripting.CodeContext $context) <0x4e46e98 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48708f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4e46a00 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x482c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4871ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4e43ca0 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x482c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4871ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4e43ca0 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1940 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4e46fd0 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x4810568 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1939 (IronScheme.Scripting.CodeContext $context) <0x4e46e98 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48708f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4e46a00 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x482c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4871ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4e43ca0 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x482c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4871ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4e43ca0 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1940 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4e46fd0 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x4810568 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1939 (IronScheme.Scripting.CodeContext $context) <0x4e46e98 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48708f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4e46a00 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x482c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4871ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4e43ca0 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x482c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4871ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4e43ca0 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1940 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4e46fd0 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x4810568 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1939 (IronScheme.Scripting.CodeContext $context) <0x4e46e98 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48708f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4e46a00 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x482c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4871ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4e43ca0 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x482c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4871ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4e43ca0 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1940 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4e46fd0 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x4810568 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1939 (IronScheme.Scripting.CodeContext $context) <0x4e46e98 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48708f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4e46a00 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x482c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4871ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4e43ca0 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x482c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4871ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4e43ca0 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1940 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4e46fd0 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x4810568 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1939 (IronScheme.Scripting.CodeContext $context) <0x4e46e98 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48708f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4e46a00 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x482c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4871ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4e43ca0 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x482c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4871ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4e43ca0 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1940 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4e46fd0 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x4810568 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1939 (IronScheme.Scripting.CodeContext $context) <0x4e46e98 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48708f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4e46a00 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x482c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4871ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4e43ca0 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x482c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4871ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4e43ca0 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1940 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4e46fd0 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x4810568 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1939 (IronScheme.Scripting.CodeContext $context) <0x4e46e98 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48708f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4e46a00 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x482c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4871ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4e43ca0 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x482c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4871ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4e43ca0 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1940 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4e46fd0 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x4810568 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1939 (IronScheme.Scripting.CodeContext $context) <0x4e46e98 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48708f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4e46a00 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x482c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4871ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4e43ca0 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x482c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4871ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4e43ca0 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1940 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4e46fd0 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x4810568 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1939 (IronScheme.Scripting.CodeContext $context) <0x4e46e98 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48708f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4e46a00 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x482c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4871ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4e43ca0 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x482c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4871ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4e43ca0 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1940 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4e46fd0 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x4810568 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1939 (IronScheme.Scripting.CodeContext $context) <0x4e46e98 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48708f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4e46a00 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x482c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4871ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4e43ca0 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x482c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4871ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4e43ca0 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1940 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4e46fd0 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x4810568 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1939 (IronScheme.Scripting.CodeContext $context) <0x4e46e98 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48708f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4e46a00 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x482c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4871ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4e43ca0 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x482c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4871ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4e43ca0 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1940 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4e46fd0 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x4810568 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1939 (IronScheme.Scripting.CodeContext $context) <0x4e46e98 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48708f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4e46a00 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x482c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4871ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4e43ca0 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x482c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4871ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4e43ca0 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1940 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4e46fd0 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x4810568 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1939 (IronScheme.Scripting.CodeContext $context) <0x4e46e98 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48708f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4e46a00 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x482c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4871ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4e43ca0 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x482c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4871ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4e43ca0 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1940 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4e46fd0 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x4810568 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1939 (IronScheme.Scripting.CodeContext $context) <0x4e46e98 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48708f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4e46a00 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x482c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4871ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4e43ca0 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x482c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4871ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4e43ca0 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1940 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4e46fd0 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x4810568 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1939 (IronScheme.Scripting.CodeContext $context) <0x4e46e98 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48708f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4e46a00 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x482c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4871ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4e43ca0 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x482c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4871ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4e43ca0 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1940 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4e46fd0 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x4810568 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1939 (IronScheme.Scripting.CodeContext $context) <0x4e46e98 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48708f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4e46a00 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x482c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4871ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4e43ca0 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x482c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4871ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4e43ca0 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1940 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4e46fd0 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x4810568 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1939 (IronScheme.Scripting.CodeContext $context) <0x4e46e98 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48708f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4e46a00 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x482c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4871ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4e43ca0 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x482c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4871ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4e43ca0 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1940 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4e46fd0 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x4810568 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1939 (IronScheme.Scripting.CodeContext $context) <0x4e46e98 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48708f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4e46a00 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x482c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4871ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4e43ca0 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x482c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4871ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4e43ca0 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1940 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4e46fd0 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x4810568 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1939 (IronScheme.Scripting.CodeContext $context) <0x4e46e98 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48708f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4e46a00 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x482c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4871ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4e43ca0 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x482c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4871ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4e43ca0 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1940 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4e46fd0 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x4810568 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1939 (IronScheme.Scripting.CodeContext $context) <0x4e46e98 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48708f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4e46a00 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x482c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4871ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4e43ca0 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x482c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4871ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4e43ca0 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1940 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4e46fd0 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x4810568 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1939 (IronScheme.Scripting.CodeContext $context) <0x4e46e98 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48708f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4e46a00 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x482c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4871ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4e43ca0 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x482c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4871ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4e43ca0 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1940 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4e46fd0 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x4810568 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1939 (IronScheme.Scripting.CodeContext $context) <0x4e46e98 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48708f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4e46a00 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x482c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4871ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4e43ca0 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x482c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4871ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4e43ca0 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1940 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4e46fd0 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x4810568 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1939 (IronScheme.Scripting.CodeContext $context) <0x4e46e98 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48708f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4e46a00 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x482c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4871ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4e43ca0 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x482c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4871ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4e43ca0 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1940 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4e46fd0 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x4810568 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1939 (IronScheme.Scripting.CodeContext $context) <0x4e46e98 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48708f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4e46a00 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x482c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4871ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4e43ca0 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x482c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4871ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4e43ca0 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1940 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4e46fd0 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x4810568 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1939 (IronScheme.Scripting.CodeContext $context) <0x4e46e98 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48708f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4e46a00 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x482c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4871ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4e43ca0 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x482c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4871ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4e43ca0 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1940 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4e46fd0 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x4810568 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1939 (IronScheme.Scripting.CodeContext $context) <0x4e46e98 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48708f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4e46a00 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x482c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4871ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4e43ca0 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x482c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4871ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4e43ca0 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1940 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4e46fd0 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x4810568 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1939 (IronScheme.Scripting.CodeContext $context) <0x4e46e98 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48708f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4e46a00 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x482c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4871ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4e43ca0 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x482c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4871ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4e43ca0 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1940 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4e46fd0 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x4810568 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1939 (IronScheme.Scripting.CodeContext $context) <0x4e46e98 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48708f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4e46a00 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x482c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4871ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4e43ca0 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x482c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4871ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4e43ca0 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1940 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4e46fd0 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x4810568 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1939 (IronScheme.Scripting.CodeContext $context) <0x4e46e98 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48708f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4e46a00 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x482c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4871ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4e43ca0 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x482c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4871ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4e43ca0 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1940 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4e46fd0 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x4810568 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1939 (IronScheme.Scripting.CodeContext $context) <0x4e46e98 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48708f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4e46a00 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x482c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4871ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4e43ca0 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x482c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::for-each (System.Object f, System.Object arg1) <0x4871ed0 + 0x00038> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-record (System.Object rec, System.Object port, System.Object readable?) <0x4e43ca0 + 0x0021f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal##f$1940 (IronScheme.Scripting.CodeContext $context, System.Object ar, System.Object dr) <0x4e46fd0 + 0x000cf> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2) <0x4810568 + 0x0003d> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair##write-normal$1939 (IronScheme.Scripting.CodeContext $context) <0x4e46e98 + 0x000f3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48708f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-pair (System.Object p, System.Object port, System.Object readable?) <0x4e46a00 + 0x002e1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1, System.Object arg2, System.Object arg3) <0x4882180 + 0x00044> in <filename unknown>:0 
  at #.ironscheme.generic-writer::write-custom-printers (System.Object printers, System.Object obj, System.Object port, System.Object readable?) <0x4966ee0 + 0x000ad> in <filename unknown>:0 
  at #.ironscheme.generic-writer::generic-write (System.Object obj, System.Object port, System.Object readable?) <0x4966b90 + 0x0011f> in <filename unknown>:0

Stack overflow; could be anything.

[christoff-buerger]

tests/patterns.scm:

Unhandled exception during evaluation:
racr-exception
&message: "RACR exception: Invalid pattern definition; The pattern is not well-formed."

That is very interesting. It hints that Mono LLVM maybe has major bugs.

[christoff-buerger]

all activity diagrams with input:

Unhandled CLR exception during evaluation:
CLR Exception: System.InvalidCastException
System.InvalidCastException: Specified cast is not valid.
  at racr.core.att-value+ (System.Object name, System.Object n, System.Object args) <0x4f02d60 + 0x00b94> in <filename unknown>:0 
  at ttc-2015-fuml-activity-diagrams.user-interface.run-activity-diagram (System.Object diagram-file, System.Object input-file, System.Object mode, System.Object print-trace?) <0x4ef0000 + 0x0019e> in <filename unknown>:0 
  at eval-core(004).$1 () <0x4ec8880 + 0x0012c> in <filename unknown>:0 
  at IronScheme.Scripting.ScriptCode.Run (IronScheme.Scripting.CodeContext codeContext, Boolean tryEvaluate) <0x490a2e0 + 0x0008d> in <filename unknown>:0 
  at IronScheme.Scripting.ScriptCode.Run (IronScheme.Scripting.ScriptModule module) <0x490a150 + 0x00071> in <filename unknown>:0 
  at IronScheme.Runtime.Builtins+<>c__DisplayClass52_1.<CompileCore>b__1 () <0x490a040 + 0x00027> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48a18f8 + 0x0002c> in <filename unknown>:0 
  at #.psyntax.expander::compile-r6rs-top-level#anon#1#2$2661 (IronScheme.Scripting.CodeContext $context) <0x49e92b0 + 0x00087> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48a18f8 + 0x0002c> in <filename unknown>:0 
  at #.psyntax.main::load-r6rs-top-level#1#anon#1#2#3#4#5#6$2703 (IronScheme.Scripting.CodeContext $context) <0x4990f10 + 0x00053> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48a18f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.exceptions::dynamic-wind (System.Object in, System.Object proc, System.Object out) <0x4858e00 + 0x000f8> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48a18f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.exceptions::dynamic-wind (System.Object in, System.Object proc, System.Object out) <0x4858e00 + 0x000f8> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object[] args) <0x4827478 + 0x00331> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+VarArgClosure.Call (System.Object[] args) <0x4826140 + 0x0014e> in <filename unknown>:0 
  at #.psyntax.main::load#1$2677 (IronScheme.Scripting.CodeContext $context) <0x49882c0 + 0x000d3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48a18f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.exceptions::with-exception-handlers#1#anon#1$1845 (IronScheme.Scripting.CodeContext $context) <0x4988140 + 0x0004b> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48a18f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.exceptions::dynamic-wind (System.Object in, System.Object proc, System.Object out) <0x4858e00 + 0x000f8> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x485d080 + 0x00036> in <filename unknown>:0 
  at IronScheme.Runtime.Builtins.CallWithCurrentContinuation (System.Object fc1) <0x49872e0 + 0x00093> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48a18f8 + 0x0002c> in <filename unknown>:0 
  at IronScheme.Runtime.R6RS.Exceptions.WithClrExceptionHandler (System.Object handler, System.Object thunk) <0x49870f8 + 0x00049> in <filename unknown>:0 

A simple, plain cast exception. No stack overflow, no deep trace. Maybe some Scheme type is not properly handled? All diagrams have the same exception trace (except some memory addresses of course).

[christoff-buerger]

all SiPLE programs:

Two types of exceptions can be distinguished. First (for example correct/abnormal_termination.siple)

Unhandled CLR exception during evaluation:
CLR Exception: System.InvalidCastException
System.InvalidCastException: Specified cast is not valid.
  at siple.type-coercion.specify-type-coercion#1#anon#1#2#3#4#5#6#7#8#9$234 (IronScheme.Scripting.CodeContext $context, System.Object n) <0x51facf0 + 0x0018e> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object[] args) <0x4806478 + 0x00331> in <filename unknown>:0 
  at racr.core.att-value#anon#1#2#3#4#5#6$336 (IronScheme.Scripting.CodeContext $context) <0x51cbcc0 + 0x000b5> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48808f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.exceptions::dynamic-wind (System.Object in, System.Object proc, System.Object out) <0x4837e00 + 0x000f8> in <filename unknown>:0 
  at racr.core.att-value+ (System.Object name, System.Object n, System.Object args) <0x51c7290 + 0x00b63> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object[] args) <0x4806478 + 0x00331> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+VarArgClosure.Call (System.Object[] args) <0x4805140 + 0x0014e> in <filename unknown>:0 
  at racr.core.lookup-attribute##loop#anon#1#2#3$325 (IronScheme.Scripting.CodeContext $context, System.Object n, System.Object args) <0x51cc510 + 0x000b2> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object[] args) <0x4806478 + 0x00331> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+VarArgClosure.Call (System.Object[] args) <0x4805140 + 0x0014e> in <filename unknown>:0 
  at racr.core.att-value#anon#1#2#3#4#5#6$336 (IronScheme.Scripting.CodeContext $context) <0x51cbcc0 + 0x000b5> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48808f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.exceptions::dynamic-wind (System.Object in, System.Object proc, System.Object out) <0x4837e00 + 0x000f8> in <filename unknown>:0 
  at racr.core.att-value+ (System.Object name, System.Object n, System.Object args) <0x51c7290 + 0x00b63> in <filename unknown>:0 
  at siple.type-coercion.perform-type-coercions##anon$221 (IronScheme.Scripting.CodeContext $context, System.Object n) <0x51c60b0 + 0x00053> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x483c080 + 0x00036> in <filename unknown>:0 
  at racr.core.perform-rewrites##find-and-apply#anon#1#2$414 (IronScheme.Scripting.CodeContext $context, System.Object transformer) <0x51c5f20 + 0x00054> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x483c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::find (System.Object proc, System.Object l) <0x4ef3c30 + 0x00042> in <filename unknown>:0 
  at racr.core.perform-rewrites##find-and-apply#anon$413 (IronScheme.Scripting.CodeContext $context, System.Object n) <0x51c5a90 + 0x001ce> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x483c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::find (System.Object proc, System.Object l) <0x4ef3c30 + 0x00042> in <filename unknown>:0 
  at racr.core.perform-rewrites##find-and-apply#anon$413 (IronScheme.Scripting.CodeContext $context, System.Object n) <0x51c5a90 + 0x00155> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x483c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::find (System.Object proc, System.Object l) <0x4ef3c30 + 0x00042> in <filename unknown>:0 
  at racr.core.perform-rewrites##find-and-apply#anon$413 (IronScheme.Scripting.CodeContext $context, System.Object n) <0x51c5a90 + 0x00155> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x483c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::find (System.Object proc, System.Object l) <0x4ef3c30 + 0x00042> in <filename unknown>:0 
  at racr.core.perform-rewrites##find-and-apply#anon$413 (IronScheme.Scripting.CodeContext $context, System.Object n) <0x51c5a90 + 0x00155> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x483c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::find (System.Object proc, System.Object l) <0x4ef3c30 + 0x00042> in <filename unknown>:0 
  at racr.core.perform-rewrites##find-and-apply#anon$413 (IronScheme.Scripting.CodeContext $context, System.Object n) <0x51c5a90 + 0x00155> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x483c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::find (System.Object proc, System.Object l) <0x4ef3c30 + 0x00042> in <filename unknown>:0 
  at racr.core.perform-rewrites##find-and-apply#anon$413 (IronScheme.Scripting.CodeContext $context, System.Object n) <0x51c5a90 + 0x00155> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x483c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::find (System.Object proc, System.Object l) <0x4ef3c30 + 0x00042> in <filename unknown>:0 
  at racr.core.perform-rewrites##find-and-apply#anon$413 (IronScheme.Scripting.CodeContext $context, System.Object n) <0x51c5a90 + 0x00155> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x483c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::find (System.Object proc, System.Object l) <0x4ef3c30 + 0x00042> in <filename unknown>:0 
  at racr.core.perform-rewrites##find-and-apply#anon$413 (IronScheme.Scripting.CodeContext $context, System.Object n) <0x51c5a90 + 0x00155> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x483c080 + 0x00036> in <filename unknown>:0 
  at #.ironscheme.lists::find (System.Object proc, System.Object l) <0x4ef3c30 + 0x00042> in <filename unknown>:0 
  at racr.core.perform-rewrites##find-and-apply#anon$413 (IronScheme.Scripting.CodeContext $context, System.Object n) <0x51c5a90 + 0x00155> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x483c080 + 0x00036> in <filename unknown>:0 
  at racr.core.perform-rewrites##1#loop$415 (IronScheme.Scripting.CodeContext $context) <0x51c5070 + 0x001c3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48808f8 + 0x0002c> in <filename unknown>:0 
  at racr.core.perform-rewrites+ (System.Object n, System.Object strategy, System.Object transformers) <0x51c31b0 + 0x00517> in <filename unknown>:0 
  at siple.parser.construct-parser#1#anon#1#2#3#4#5#6#7##anon$277 (IronScheme.Scripting.CodeContext $context) <0x51a81d0 + 0x00064> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48808f8 + 0x0002c> in <filename unknown>:0 
  at siple.main.siple-interpret#anon#1$444 (IronScheme.Scripting.CodeContext $context) <0x51a0760 + 0x00089> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48808f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.exceptions::dynamic-wind (System.Object in, System.Object proc, System.Object out) <0x4837e00 + 0x000f8> in <filename unknown>:0 
  at siple.main.siple-interpret (System.Object input, System.Object output-port) <0x51a0120 + 0x001f8> in <filename unknown>:0 
  at eval-core(004).$1 () <0x519fa80 + 0x0012e> in <filename unknown>:0 
  at IronScheme.Scripting.ScriptCode.Run (IronScheme.Scripting.CodeContext codeContext, Boolean tryEvaluate) <0x48e92e0 + 0x0008d> in <filename unknown>:0 
  at IronScheme.Scripting.ScriptCode.Run (IronScheme.Scripting.ScriptModule module) <0x48e9150 + 0x00071> in <filename unknown>:0 
  at IronScheme.Runtime.Builtins+<>c__DisplayClass52_1.<CompileCore>b__1 () <0x48e9040 + 0x00027> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48808f8 + 0x0002c> in <filename unknown>:0 
  at #.psyntax.expander::compile-r6rs-top-level#anon#1#2$2661 (IronScheme.Scripting.CodeContext $context) <0x4dcf8e0 + 0x00087> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48808f8 + 0x0002c> in <filename unknown>:0 
  at #.psyntax.main::load-r6rs-top-level#1#anon#1#2#3#4#5#6$2703 (IronScheme.Scripting.CodeContext $context) <0x496fc10 + 0x00053> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48808f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.exceptions::dynamic-wind (System.Object in, System.Object proc, System.Object out) <0x4837e00 + 0x000f8> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48808f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.exceptions::dynamic-wind (System.Object in, System.Object proc, System.Object out) <0x4837e00 + 0x000f8> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object[] args) <0x4806478 + 0x00331> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+VarArgClosure.Call (System.Object[] args) <0x4805140 + 0x0014e> in <filename unknown>:0 
  at #.psyntax.main::load#1$2677 (IronScheme.Scripting.CodeContext $context) <0x4966fb0 + 0x000d3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48808f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.exceptions::with-exception-handlers#1#anon#1$1845 (IronScheme.Scripting.CodeContext $context) <0x4966e30 + 0x0004b> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48808f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.exceptions::dynamic-wind (System.Object in, System.Object proc, System.Object out) <0x4837e00 + 0x000f8> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x483c080 + 0x00036> in <filename unknown>:0 
  at IronScheme.Runtime.Builtins.CallWithCurrentContinuation (System.Object fc1) <0x4965fd0 + 0x00093> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x48808f8 + 0x0002c> in <filename unknown>:0 
  at IronScheme.Runtime.R6RS.Exceptions.WithClrExceptionHandler (System.Object handler, System.Object thunk) <0x4965de8 + 0x00049> in <filename unknown>:0

and second (for example correct/assertions.siple)

Unhandled CLR exception during evaluation:
CLR Exception: System.InvalidCastException
System.InvalidCastException: Specified cast is not valid.
  at racr.core.node-find-child (System.Object n, System.Object context-name) <0x510c350 + 0x00151> in <filename unknown>:0 
  at racr.core.ast-child (System.Object i, System.Object n) <0x510bd50 + 0x00056> in <filename unknown>:0 
  at siple.well-formedness.specify-well-formedness#1#anon#1#2#3#4#5#6#7#8#9$394 (IronScheme.Scripting.CodeContext $context, System.Object n) <0x510b520 + 0x000ac> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object[] args) <0x47b2478 + 0x00331> in <filename unknown>:0 
  at racr.core.att-value#anon#1#2#3#4#5#6$336 (IronScheme.Scripting.CodeContext $context) <0x5102d00 + 0x000b5> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x482c8f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.exceptions::dynamic-wind (System.Object in, System.Object proc, System.Object out) <0x47e3e00 + 0x000f8> in <filename unknown>:0 
  at racr.core.att-value+ (System.Object name, System.Object n, System.Object args) <0x50fe2c0 + 0x00b63> in <filename unknown>:0 
  at siple.interpreter.weave-interpreter#anon#1$413 (IronScheme.Scripting.CodeContext $context, System.Object n, System.Object args) <0x510b300 + 0x00059> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object[] args) <0x47b2478 + 0x00331> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+VarArgClosure.Call (System.Object[] args) <0x47b1140 + 0x0014e> in <filename unknown>:0 
  at racr.core.ast-annotation-set!#anon$293 (IronScheme.Scripting.CodeContext $context, System.Object args) <0x510b100 + 0x0008a> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object[] args) <0x47b2478 + 0x00331> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+VarArgClosure.Call (System.Object[] args) <0x47b1140 + 0x0014e> in <filename unknown>:0 
  at IronScheme.Runtime.Closure.Call (System.Object arg1) <0x47b0ec0 + 0x00046> in <filename unknown>:0 
  at siple.main.siple-interpret#anon#1$444 (IronScheme.Scripting.CodeContext $context) <0x50dc760 + 0x000c1> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x482c8f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.exceptions::dynamic-wind (System.Object in, System.Object proc, System.Object out) <0x47e3e00 + 0x000f8> in <filename unknown>:0 
  at siple.main.siple-interpret (System.Object input, System.Object output-port) <0x50dc120 + 0x001f8> in <filename unknown>:0 
  at eval-core(004).$1 () <0x50dba80 + 0x0012e> in <filename unknown>:0 
  at IronScheme.Scripting.ScriptCode.Run (IronScheme.Scripting.CodeContext codeContext, Boolean tryEvaluate) <0x48952e0 + 0x0008d> in <filename unknown>:0 
  at IronScheme.Scripting.ScriptCode.Run (IronScheme.Scripting.ScriptModule module) <0x4895150 + 0x00071> in <filename unknown>:0 
  at IronScheme.Runtime.Builtins+<>c__DisplayClass52_1.<CompileCore>b__1 () <0x4895040 + 0x00027> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x482c8f8 + 0x0002c> in <filename unknown>:0 
  at #.psyntax.expander::compile-r6rs-top-level#anon#1#2$2661 (IronScheme.Scripting.CodeContext $context) <0x4d7b8e0 + 0x00087> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x482c8f8 + 0x0002c> in <filename unknown>:0 
  at #.psyntax.main::load-r6rs-top-level#1#anon#1#2#3#4#5#6$2703 (IronScheme.Scripting.CodeContext $context) <0x491bc10 + 0x00053> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x482c8f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.exceptions::dynamic-wind (System.Object in, System.Object proc, System.Object out) <0x47e3e00 + 0x000f8> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x482c8f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.exceptions::dynamic-wind (System.Object in, System.Object proc, System.Object out) <0x47e3e00 + 0x000f8> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object[] args) <0x47b2478 + 0x00331> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+VarArgClosure.Call (System.Object[] args) <0x47b1140 + 0x0014e> in <filename unknown>:0 
  at #.psyntax.main::load#1$2677 (IronScheme.Scripting.CodeContext $context) <0x4912fb0 + 0x000d3> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x482c8f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.exceptions::with-exception-handlers#1#anon#1$1845 (IronScheme.Scripting.CodeContext $context) <0x4912e30 + 0x0004b> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x482c8f8 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.exceptions::dynamic-wind (System.Object in, System.Object proc, System.Object out) <0x47e3e00 + 0x000f8> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x47e8080 + 0x00036> in <filename unknown>:0 
  at IronScheme.Runtime.Builtins.CallWithCurrentContinuation (System.Object fc1) <0x4911fd0 + 0x00093> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x482c8f8 + 0x0002c> in <filename unknown>:0 
  at IronScheme.Runtime.R6RS.Exceptions.WithClrExceptionHandler (System.Object handler, System.Object thunk) <0x4911de8 + 0x00049> in <filename unknown>:0

Again, simple cast exceptions without big traces.

[christoff-buerger]

IMPORTANT: Because the LLVM-based Mono is to buggy, I now switch back to the default, JIT-based version.

[christoff-buerger]

To investigate the Unhandled CLR exception during evaluation: () error of tests/ast-construction.scm further, I activated a more detailed stack tracing in IronScheme (it can be activated by importing (ironscheme) and setting (display-stacktrace #t) immediately before execution of the test). The detailed trace yields on JIT-based Mono:

Stack overflow in unmanaged: IP: 0x266aa7, fault addr: 0xbf7d0ffc
Stack overflow in unmanaged: IP: 0xe185c, fault addr: 0xbf7cff3c
Stack overflow in unmanaged: IP: 0x95f78a41, fault addr: 0xbf7cffbc
Stack overflow in unmanaged: IP: 0x161a3c, fault addr: 0xbf7cfde0
Unhandled CLR exception during evaluation:
CLR Exception: System.NullReferenceException
System.NullReferenceException: Object reference not set to an instance of an object
  at #.psyntax.main::with-guard#1$2667 (IronScheme.Scripting.CodeContext $context, System.Object e) <0x3af04c0 + 0x0005f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x382e478 + 0x00036> in <filename unknown>:0 
  at IronScheme.Runtime.R6RS.Exceptions.WithClrExceptionHandler (System.Object handler, System.Object thunk) <0x38ce698 + 0x00077> in <filename unknown>:0 
  at #.psyntax.main::with-guard (System.Object f) <0x38e3828 + 0x001cf> in <filename unknown>:0 
  at IronScheme.Scripting.ScriptCode.Run (IronScheme.Scripting.CodeContext codeContext, Boolean tryEvaluate) <0x388db78 + 0x000c6> in <filename unknown>:0 
  at IronScheme.Scripting.ScriptCode.Run (IronScheme.Scripting.ScriptModule module) <0x388dad0 + 0x0008b> in <filename unknown>:0 
  at IronScheme.Runtime.Builtins+<>c__DisplayClass52_1.<CompileCore>b__1 () <0x388da98 + 0x0002f> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x3862848 + 0x0002c> in <filename unknown>:0 
  at #.psyntax.expander::eval (System.Object x, System.Object env) <0x383a4e0 + 0x000f7> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x3862848 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.exceptions::dynamic-wind (System.Object in, System.Object proc, System.Object out) <0x3869f80 + 0x0017b> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x3862848 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.exceptions::with-exception-handlers#1#anon#1$1845 (IronScheme.Scripting.CodeContext $context) <0x38cf200 + 0x0004b> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x3862848 + 0x0002c> in <filename unknown>:0 
  at #.ironscheme.exceptions::dynamic-wind (System.Object in, System.Object proc, System.Object out) <0x3869f80 + 0x0017b> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call (System.Object arg1) <0x382e478 + 0x00036> in <filename unknown>:0 
  at IronScheme.Runtime.Builtins.CallWithCurrentContinuation (System.Object fc1) <0x38ce7e0 + 0x00102> in <filename unknown>:0 
  at IronScheme.Runtime.Closure+SimpleClosure.Call () <0x3862848 + 0x0002c> in <filename unknown>:0 
  at IronScheme.Runtime.R6RS.Exceptions.WithClrExceptionHandler (System.Object handler, System.Object thunk) <0x38ce698 + 0x00049> in <filename unknown>:0

[christoff-buerger]

The lastest version of IronScheme fixes an error regarding the opaque property not being set on compiled records (leppie/IronScheme@e06a7beea35f1365177be948d6e8e5d60160e691). This fix solves the problems of tests/ast-construction.scm.

It seems, that opaque records that are part of a compiled library were not flagged to be opaque in IronScheme. For this reason call-with-string-output-port and display decomposed them when object->string is used in throw-exception. The opaque records of RACR are cyclic however, such that no finite decomposition exists. Thus, when throw-exception is used to throw human readable error messages in case of a specification error and one of its arguments was a cyclic opaque record, IronScheme erroneously tried to decompose it via call-with-string-output-port and display. Fix leppie/IronScheme@e06a7beea35f1365177be948d6e8e5d60160e691 now properly sets the opaque flag of records part of a compiled library, effectively prohibiting to investigate them for a non-existent decomposition.

IronScheme now passes all RACR tests on JIT-based Mono.