"EXCEPTION! DECOMPILER FAILED! System.InvalidOperationException: Stack empty." Error in .GML Decompiler

[Junk-Repo]

Describe the bug

In the UndertaleModTool version 0.6.1.0, attempting to decompile .GML code for Zero Sievert version 0.52.07, the error "System.InvalidOperationException: Stack empty" is thrown in 11% of the files. This error occurs consistently across multiple attempts.

[!NOTE] This error did not occur for UndertaleModTool version 0.5.0.0 against Zero Sievert version 0.28.03.

[!TIP] If there are any specific log files or additional diagnostic information I should include in this bug report, let me know. I want to provide as much detail as possible to help with identifying and resolving the issue.

Error is thrown 895 times in 304 of 2584 .gml files list_affected_gml_files.txt

The common error descriptions are:

• WARNING: Recursive script decompilation (for member variable name resolution) failed for...
• WARNING: Recursive script decompilation (for asset type resolution) failed for...

Below is the stack track from from 1 of the files (gml_GlobalScript_class_ui_loot_reward.gml).

/*
WARNING: Recursive script decompilation (for member variable name resolution) failed for gml_Script_loot_draw

System.InvalidOperationException: Stack empty.
   at System.Collections.Generic.Stack`1.ThrowForEmptyStack()
   at System.Collections.Generic.Stack`1.Pop()
   at UndertaleModLib.Decompiler.Decompiler.DecompileFromBlock(DecompileContext context, Dictionary`2 blocks, Block block, List`1 tempvars, Stack`1 workQueue) in D:\a\UndertaleModTool\UndertaleModTool\UndertaleModLib\Decompiler\Decompiler.cs:line 235
   at UndertaleModLib.Decompiler.Decompiler.DecompileFromBlock(DecompileContext context, Dictionary`2 blocks, Block block) in D:\a\UndertaleModTool\UndertaleModTool\UndertaleModLib\Decompiler\Decompiler.cs:line 795
   at UndertaleModLib.Decompiler.Decompiler.<DecompileFromBlock>g__FindActualNameForAnonymousCodeObject|3_2(DecompileContext context, UndertaleCode anonymousCodeObject) in D:\a\UndertaleModTool\UndertaleModTool\UndertaleModLib\Decompiler\Decompiler.cs:line 563
*/
/*
WARNING: Recursive script decompilation (for member variable name resolution) failed for gml_Script_uiOnionCurrent

System.InvalidOperationException: Stack empty.
   at System.Collections.Generic.Stack`1.ThrowForEmptyStack()
   at System.Collections.Generic.Stack`1.Pop()
   at UndertaleModLib.Decompiler.Decompiler.DecompileFromBlock(DecompileContext context, Dictionary`2 blocks, Block block, List`1 tempvars, Stack`1 workQueue) in D:\a\UndertaleModTool\UndertaleModTool\UndertaleModLib\Decompiler\Decompiler.cs:line 280
   at UndertaleModLib.Decompiler.Decompiler.DecompileFromBlock(DecompileContext context, Dictionary`2 blocks, Block block) in D:\a\UndertaleModTool\UndertaleModTool\UndertaleModLib\Decompiler\Decompiler.cs:line 795
   at UndertaleModLib.Decompiler.Decompiler.<DecompileFromBlock>g__FindActualNameForAnonymousCodeObject|3_2(DecompileContext context, UndertaleCode anonymousCodeObject) in D:\a\UndertaleModTool\UndertaleModTool\UndertaleModLib\Decompiler\Decompiler.cs:line 563
*/
/*
WARNING: Recursive script decompilation (for member variable name resolution) failed for gml_Script_uiOnionCurrentLayer

System.InvalidOperationException: Stack empty.
   at System.Collections.Generic.Stack`1.ThrowForEmptyStack()
   at System.Collections.Generic.Stack`1.Pop()
   at UndertaleModLib.Decompiler.Decompiler.DecompileFromBlock(DecompileContext context, Dictionary`2 blocks, Block block, List`1 tempvars, Stack`1 workQueue) in D:\a\UndertaleModTool\UndertaleModTool\UndertaleModLib\Decompiler\Decompiler.cs:line 280
   at UndertaleModLib.Decompiler.Decompiler.DecompileFromBlock(DecompileContext context, Dictionary`2 blocks, Block block) in D:\a\UndertaleModTool\UndertaleModTool\UndertaleModLib\Decompiler\Decompiler.cs:line 795
   at UndertaleModLib.Decompiler.Decompiler.<DecompileFromBlock>g__FindActualNameForAnonymousCodeObject|3_2(DecompileContext context, UndertaleCode anonymousCodeObject) in D:\a\UndertaleModTool\UndertaleModTool\UndertaleModLib\Decompiler\Decompiler.cs:line 563
*/
/*
WARNING: Recursive script decompilation (for asset type resolution) failed for gml_Script_loot_draw

System.InvalidOperationException: Stack empty.
   at System.Collections.Generic.Stack`1.ThrowForEmptyStack()
   at System.Collections.Generic.Stack`1.Pop()
   at UndertaleModLib.Decompiler.Decompiler.DecompileFromBlock(DecompileContext context, Dictionary`2 blocks, Block block, List`1 tempvars, Stack`1 workQueue) in D:\a\UndertaleModTool\UndertaleModTool\UndertaleModLib\Decompiler\Decompiler.cs:line 235
   at UndertaleModLib.Decompiler.Decompiler.DecompileFromBlock(DecompileContext context, Dictionary`2 blocks, Block block) in D:\a\UndertaleModTool\UndertaleModTool\UndertaleModLib\Decompiler\Decompiler.cs:line 795
   at UndertaleModLib.Decompiler.Decompiler.DirectFunctionCall.DoTypePropagation(DecompileContext context, AssetIDType suggestedType) in D:\a\UndertaleModTool\UndertaleModTool\UndertaleModLib\Decompiler\Instructions\Decompiler.DirectFunctionCall.cs:line 139
*/
/*
WARNING: Recursive script decompilation (for member variable name resolution) failed for gml_Script_item_weapon_draw_modded

System.InvalidOperationException: Stack empty.
   at System.Collections.Generic.Stack`1.ThrowForEmptyStack()
   at System.Collections.Generic.Stack`1.Pop()
   at UndertaleModLib.Decompiler.Decompiler.DecompileFromBlock(DecompileContext context, Dictionary`2 blocks, Block block, List`1 tempvars, Stack`1 workQueue) in D:\a\UndertaleModTool\UndertaleModTool\UndertaleModLib\Decompiler\Decompiler.cs:line 280
   at UndertaleModLib.Decompiler.Decompiler.DecompileFromBlock(DecompileContext context, Dictionary`2 blocks, Block block) in D:\a\UndertaleModTool\UndertaleModTool\UndertaleModLib\Decompiler\Decompiler.cs:line 795
   at UndertaleModLib.Decompiler.Decompiler.<DecompileFromBlock>g__FindActualNameForAnonymousCodeObject|3_2(DecompileContext context, UndertaleCode anonymousCodeObject) in D:\a\UndertaleModTool\UndertaleModTool\UndertaleModLib\Decompiler\Decompiler.cs:line 563
*/
/*
WARNING: Recursive script decompilation (for asset type resolution) failed for gml_Script_item_weapon_draw_modded

System.InvalidOperationException: Stack empty.
   at System.Collections.Generic.Stack`1.ThrowForEmptyStack()
   at System.Collections.Generic.Stack`1.Pop()
   at UndertaleModLib.Decompiler.Decompiler.DecompileFromBlock(DecompileContext context, Dictionary`2 blocks, Block block, List`1 tempvars, Stack`1 workQueue) in D:\a\UndertaleModTool\UndertaleModTool\UndertaleModLib\Decompiler\Decompiler.cs:line 280
   at UndertaleModLib.Decompiler.Decompiler.DecompileFromBlock(DecompileContext context, Dictionary`2 blocks, Block block) in D:\a\UndertaleModTool\UndertaleModTool\UndertaleModLib\Decompiler\Decompiler.cs:line 795
   at UndertaleModLib.Decompiler.Decompiler.DirectFunctionCall.DoTypePropagation(DecompileContext context, AssetIDType suggestedType) in D:\a\UndertaleModTool\UndertaleModTool\UndertaleModLib\Decompiler\Instructions\Decompiler.DirectFunctionCall.cs:line 139
*/
/*
WARNING: Recursive script decompilation (for member variable name resolution) failed for gml_Script___surface_cache

System.InvalidOperationException: Stack empty.
   at System.Collections.Generic.Stack`1.ThrowForEmptyStack()
   at System.Collections.Generic.Stack`1.Pop()
   at UndertaleModLib.Decompiler.Decompiler.DecompileFromBlock(DecompileContext context, Dictionary`2 blocks, Block block, List`1 tempvars, Stack`1 workQueue) in D:\a\UndertaleModTool\UndertaleModTool\UndertaleModLib\Decompiler\Decompiler.cs:line 280
   at UndertaleModLib.Decompiler.Decompiler.DecompileFromBlock(DecompileContext context, Dictionary`2 blocks, Block block) in D:\a\UndertaleModTool\UndertaleModTool\UndertaleModLib\Decompiler\Decompiler.cs:line 795
   at UndertaleModLib.Decompiler.Decompiler.<DecompileFromBlock>g__FindActualNameForAnonymousCodeObject|3_2(DecompileContext context, UndertaleCode anonymousCodeObject) in D:\a\UndertaleModTool\UndertaleModTool\UndertaleModLib\Decompiler\Decompiler.cs:line 563
*/
/*
WARNING: Recursive script decompilation (for asset type resolution) failed for gml_Script___surface_cache

System.InvalidOperationException: Stack empty.
   at System.Collections.Generic.Stack`1.ThrowForEmptyStack()
   at System.Collections.Generic.Stack`1.Pop()
   at UndertaleModLib.Decompiler.Decompiler.DecompileFromBlock(DecompileContext context, Dictionary`2 blocks, Block block, List`1 tempvars, Stack`1 workQueue) in D:\a\UndertaleModTool\UndertaleModTool\UndertaleModLib\Decompiler\Decompiler.cs:line 280
   at UndertaleModLib.Decompiler.Decompiler.DecompileFromBlock(DecompileContext context, Dictionary`2 blocks, Block block) in D:\a\UndertaleModTool\UndertaleModTool\UndertaleModLib\Decompiler\Decompiler.cs:line 795
   at UndertaleModLib.Decompiler.Decompiler.DirectFunctionCall.DoTypePropagation(DecompileContext context, AssetIDType suggestedType) in D:\a\UndertaleModTool\UndertaleModTool\UndertaleModLib\Decompiler\Instructions\Decompiler.DirectFunctionCall.cs:line 139
*/
/*
WARNING: Recursive script decompilation (for asset type resolution) failed for gml_Script_uiOnionCurrentLayer

System.InvalidOperationException: Stack empty.
   at System.Collections.Generic.Stack`1.ThrowForEmptyStack()
   at System.Collections.Generic.Stack`1.Pop()
   at UndertaleModLib.Decompiler.Decompiler.DecompileFromBlock(DecompileContext context, Dictionary`2 blocks, Block block, List`1 tempvars, Stack`1 workQueue) in D:\a\UndertaleModTool\UndertaleModTool\UndertaleModLib\Decompiler\Decompiler.cs:line 280
   at UndertaleModLib.Decompiler.Decompiler.DecompileFromBlock(DecompileContext context, Dictionary`2 blocks, Block block) in D:\a\UndertaleModTool\UndertaleModTool\UndertaleModLib\Decompiler\Decompiler.cs:line 795
   at UndertaleModLib.Decompiler.Decompiler.DirectFunctionCall.DoTypePropagation(DecompileContext context, AssetIDType suggestedType) in D:\a\UndertaleModTool\UndertaleModTool\UndertaleModLib\Decompiler\Instructions\Decompiler.DirectFunctionCall.cs:line 139
*/
/*
WARNING: Recursive script decompilation (for asset type resolution) failed for gml_Script_uiOnionCurrent

System.InvalidOperationException: Stack empty.
   at System.Collections.Generic.Stack`1.ThrowForEmptyStack()
   at System.Collections.Generic.Stack`1.Pop()
   at UndertaleModLib.Decompiler.Decompiler.DecompileFromBlock(DecompileContext context, Dictionary`2 blocks, Block block, List`1 tempvars, Stack`1 workQueue) in D:\a\UndertaleModTool\UndertaleModTool\UndertaleModLib\Decompiler\Decompiler.cs:line 280
   at UndertaleModLib.Decompiler.Decompiler.DecompileFromBlock(DecompileContext context, Dictionary`2 blocks, Block block) in D:\a\UndertaleModTool\UndertaleModTool\UndertaleModLib\Decompiler\Decompiler.cs:line 795
   at UndertaleModLib.Decompiler.Decompiler.DirectFunctionCall.DoTypePropagation(DecompileContext context, AssetIDType suggestedType) in D:\a\UndertaleModTool\UndertaleModTool\UndertaleModLib\Decompiler\Instructions\Decompiler.DirectFunctionCall.cs:line 139
*/
/*
WARNING: Recursive script decompilation (for member variable name resolution) failed for gml_Script_uiFindAllType

System.InvalidOperationException: Stack empty.
   at System.Collections.Generic.Stack`1.ThrowForEmptyStack()
   at System.Collections.Generic.Stack`1.Pop()
   at UndertaleModLib.Decompiler.Decompiler.DecompileFromBlock(DecompileContext context, Dictionary`2 blocks, Block block, List`1 tempvars, Stack`1 workQueue) in D:\a\UndertaleModTool\UndertaleModTool\UndertaleModLib\Decompiler\Decompiler.cs:line 280
   at UndertaleModLib.Decompiler.Decompiler.DecompileFromBlock(DecompileContext context, Dictionary`2 blocks, Block block) in D:\a\UndertaleModTool\UndertaleModTool\UndertaleModLib\Decompiler\Decompiler.cs:line 795
   at UndertaleModLib.Decompiler.Decompiler.<DecompileFromBlock>g__FindActualNameForAnonymousCodeObject|3_2(DecompileContext context, UndertaleCode anonymousCodeObject) in D:\a\UndertaleModTool\UndertaleModTool\UndertaleModLib\Decompiler\Decompiler.cs:line 563
*/
/*
WARNING: Recursive script decompilation (for asset type resolution) failed for gml_Script_uiFindAllType

System.InvalidOperationException: Stack empty.
   at System.Collections.Generic.Stack`1.ThrowForEmptyStack()
   at System.Collections.Generic.Stack`1.Pop()
   at UndertaleModLib.Decompiler.Decompiler.DecompileFromBlock(DecompileContext context, Dictionary`2 blocks, Block block, List`1 tempvars, Stack`1 workQueue) in D:\a\UndertaleModTool\UndertaleModTool\UndertaleModLib\Decompiler\Decompiler.cs:line 280
   at UndertaleModLib.Decompiler.Decompiler.DecompileFromBlock(DecompileContext context, Dictionary`2 blocks, Block block) in D:\a\UndertaleModTool\UndertaleModTool\UndertaleModLib\Decompiler\Decompiler.cs:line 795
   at UndertaleModLib.Decompiler.Decompiler.DirectFunctionCall.DoTypePropagation(DecompileContext context, AssetIDType suggestedType) in D:\a\UndertaleModTool\UndertaleModTool\UndertaleModLib\Decompiler\Instructions\Decompiler.DirectFunctionCall.cs:line 139
*/

Reproducing steps

1. Per "Zero Sievert Wiki - Getting Started Modding", use latest UndertaleModTool (version 0.6.1.0) to open 'data.win' located in the Zero Sievert (version 0.52.07) installation directory.
2. (As an example file) Search and Open decompiled code 'gml_GlobalScript_class_ui_loot_reward'.
3. Observe the error message "System.InvalidOperationException: Stack empty" that appears as comments within the file.

There are about 300 files affected in this manner. Attached is a list of the file names.

Setup Details

1. UndertaleModTool versions:

   • Version 0.6.1.0 (Git: 69095cd)
   • Version 0.6.1.0

2. OS: Windows 10

3. GameMaker game: Zero Sievert version 0.52.07

[maxiterr1]

I am having the same issue with my game. Apparently UTMT has a problem with static variables

[burnedpopcorn]

If someone has a similar issue, go here

https://github.com/UnderminersTeam/UndertaleModTool/pull/1862

scroll down for the bot's unofficial build of UTMT and it should work, since it worked for me