Dynamo Crash while running graph (Unhandled Exception)

[Chrono9084]

If this issue is not a bug report or improvement request, please check the Dynamo forum, and start a thread there to discuss your issue.

Dynamo version

Revit version

Operating system

What did you do?

Ran a graph. Got a error window which asked me to post here.

What did you expect to see?

The graph work as it has in the past.

What did you see instead?

Unhandled Exception

Object reference not set to an instance of an object.

at ProtoCore.DSASM.Heap.RecursiveMark(StackValue root) at ProtoCore.DSASM.Heap.SingleStep(Boolean forceGC) at ProtoCore.DSASM.Executive.POP_helper(Instruction instruction, Int32& blockId, Int32& dimensions) at ProtoCore.DSASM.Executive.POP_Handler(Instruction instruction) at ProtoCore.DSASM.Executive.Execute(Int32 exeblock, Int32 entry, Language language) at ProtoCore.DSASM.Executive.Execute(Int32 exeblock, Int32 entry, List1 breakpoints, Language language) at ProtoCore.DSASM.Executive.BounceUsingExecutive(Executive executive, Int32 exeblock, Int32 entry, StackFrame stackFrame, Int32 locals, Boolean fepRun, Executive exec, List1 breakpoints) at ProtoScript.Runners.ProtoScriptRunner.ExecuteLive(Core core, RuntimeCore runtimeCore) at ProtoScript.Runners.LiveRunner.Execute(Boolean isCodeCompiled) at ProtoScript.Runners.LiveRunner.CompileAndExecute(List1 astList) at ProtoScript.Runners.LiveRunner.CompileAndExecuteForDeltaExecution(List1 astList) at ProtoScript.Runners.LiveRunner.SynchronizeInternal(GraphSyncData syncData) at ProtoScript.Runners.LiveRunner.UpdateGraph(GraphSyncData syncData) at Dynamo.Scheduler.UpdateGraphAsyncTask.HandleTaskExecutionCore() at Dynamo.Scheduler.AsyncTask.Execute()

[AndyDu1985]

@Chrono9084 Could upload the .dyn file? And could you do some modification to simplify your graph and find out which node cause the crash? This could help us to find out the root cause.