Unreal Engine Issues and Bug Tracker (UE-26742)

Description

The user's project is crashing during compilation of one of their character blueprints.

We have not been able to reproduce this issue in a clean project, as the repro steps are unknown outside of this particular project.

Deleting a variable and then recreating it allows you to compile the blueprint successfully one time, but then crashes on the second compile.

Found in 4.11 Preview 3.

Steps to Reproduce

1. Download the project located here: [Link Removed]
2. Open the I_MaleCharacter blueprint (Content->Characters->Male)
3. Compile the blueprint

Result: Editor Crashes

Expected: Blueprint would compile successfully

Callstack

UE4Editor_CoreUObject!UObject::ProcessEvent() [d:\buildfarm\buildmachine_++ue4+release-4.11\engine\source\runtime\coreuobject\private\uobject\scriptcore.cpp:1062]
UE4Editor_Engine!FExposedValueHandler::Execute() [d:\buildfarm\buildmachine_++ue4+release-4.11\engine\source\runtime\engine\private\animation\animnodebase.cpp:406]
UE4Editor_Engine!FAnimNode_StateMachine::FindValidTransition() [d:\buildfarm\buildmachine_++ue4+release-4.11\engine\source\runtime\engine\private\animation\animnode_statemachine.cpp:594]
UE4Editor_Engine!FAnimNode_StateMachine::Update() [d:\buildfarm\buildmachine_++ue4+release-4.11\engine\source\runtime\engine\private\animation\animnode_statemachine.cpp:385]
UE4Editor_Engine!FPoseLinkBase::Update() [d:\buildfarm\buildmachine_++ue4+release-4.11\engine\source\runtime\engine\private\animation\animnodebase.cpp:186]
UE4Editor_Engine!FPoseLinkBase::Update() [d:\buildfarm\buildmachine_++ue4+release-4.11\engine\source\runtime\engine\private\animation\animnodebase.cpp:186]
UE4Editor_AnimGraphRuntime!FAnimNode_SkeletalControlBase::Update() [d:\buildfarm\buildmachine_++ue4+release-4.11\engine\source\runtime\animgraphruntime\private\bonecontrollers\animnode_skeletalcontrolbase.cpp:33]
UE4Editor_Engine!FPoseLinkBase::Update() [d:\buildfarm\buildmachine_++ue4+release-4.11\engine\source\runtime\engine\private\animation\animnodebase.cpp:186]
UE4Editor_AnimGraphRuntime!FAnimNode_SkeletalControlBase::Update() [d:\buildfarm\buildmachine_++ue4+release-4.11\engine\source\runtime\animgraphruntime\private\bonecontrollers\animnode_skeletalcontrolbase.cpp:33]
UE4Editor_Engine!FPoseLinkBase::Update() [d:\buildfarm\buildmachine_++ue4+release-4.11\engine\source\runtime\engine\private\animation\animnodebase.cpp:186]
UE4Editor_Engine!FPoseLinkBase::Update() [d:\buildfarm\buildmachine_++ue4+release-4.11\engine\source\runtime\engine\private\animation\animnodebase.cpp:186]
UE4Editor_Engine!FAnimInstanceProxy::UpdateAnimationNode() [d:\buildfarm\buildmachine_++ue4+release-4.11\engine\source\runtime\engine\private\animation\animinstanceproxy.cpp:35]
UE4Editor_Engine!FAnimInstanceProxy::UpdateAnimation() [d:\buildfarm\buildmachine_++ue4+release-4.11\engine\source\runtime\engine\private\animation\animinstanceproxy.cpp:621]
UE4Editor_Engine!UAnimInstance::UpdateAnimation() [d:\buildfarm\buildmachine_++ue4+release-4.11\engine\source\runtime\engine\private\animation\animinstance.cpp:389]
UE4Editor_Engine!USkeletalMeshComponent::TickAnimation() [d:\buildfarm\buildmachine_++ue4+release-4.11\engine\source\runtime\engine\private\components\skeletalmeshcomponent.cpp:561]
UE4Editor_Engine!USkeletalMeshComponent::InitAnim() [d:\buildfarm\buildmachine_++ue4+release-4.11\engine\source\runtime\engine\private\components\skeletalmeshcomponent.cpp:361]
UE4Editor_Engine!USkeletalMeshComponent::OnRegister() [d:\buildfarm\buildmachine_++ue4+release-4.11\engine\source\runtime\engine\private\components\skeletalmeshcomponent.cpp:305]
UE4Editor_Engine!UActorComponent::ExecuteRegisterEvents() [d:\buildfarm\buildmachine_++ue4+release-4.11\engine\source\runtime\engine\private\components\actorcomponent.cpp:1094]
UE4Editor_Engine!UActorComponent::RegisterComponentWithWorld() [d:\buildfarm\buildmachine_++ue4+release-4.11\engine\source\runtime\engine\private\components\actorcomponent.cpp:871]
UE4Editor_Engine!AActor::IncrementalRegisterComponents() [d:\buildfarm\buildmachine_++ue4+release-4.11\engine\source\runtime\engine\private\actor.cpp:3859]
UE4Editor_Engine!AActor::RegisterAllComponents() [d:\buildfarm\buildmachine_++ue4+release-4.11\engine\source\runtime\engine\private\actor.cpp:3761]
UE4Editor_Engine!AActor::PostEditChangeProperty() [d:\buildfarm\buildmachine_++ue4+release-4.11\engine\source\runtime\engine\private\actoreditor.cpp:113]
UE4Editor_CoreUObject!UObject::PostEditChange() [d:\buildfarm\buildmachine_++ue4+release-4.11\engine\source\runtime\coreuobject\private\uobject\obj.cpp:285]
UE4Editor_UnrealEd!FBlueprintEditorUtils::PostEditChangeBlueprintActors() [d:\buildfarm\buildmachine_++ue4+release-4.11\engine\source\editor\unrealed\private\kismet2\blueprinteditorutils.cpp:7279]
UE4Editor_Kismet!FBlueprintEditor::OnBlueprintChangedImpl() [d:\buildfarm\buildmachine_++ue4+release-4.11\engine\source\editor\kismet\private\blueprinteditor.cpp:3080]
UE4Editor_Kismet!TBaseSPMethodDelegateInstance<0,FBlueprintEditor,0,TTypeWrapper<void> __cdecl(UBlueprint * __ptr64)>::Execute() [d:\buildfarm\buildmachine_++ue4+release-4.11\engine\source\runtime\core\public\delegates\delegateinstancesimpl_variadics.inl:321]
UE4Editor_Kismet!TBaseSPMethodDelegateInstance<0,FBlueprintEditor,0,void __cdecl(UBlueprint * __ptr64)>::ExecuteIfSafe() [d:\buildfarm\buildmachine_++ue4+release-4.11\engine\source\runtime\core\public\delegates\delegateinstancesimpl_variadics.inl:428]
UE4Editor_Engine!TBaseMulticastDelegate<void,UBlueprint * __ptr64>::Broadcast() [d:\buildfarm\buildmachine_++ue4+release-4.11\engine\source\runtime\core\public\delegates\delegatesignatureimpl_variadics.inl:921]
UE4Editor_UnrealEd!FKismetEditorUtilities::CompileBlueprint() [d:\buildfarm\buildmachine_++ue4+release-4.11\engine\source\editor\unrealed\private\kismet2\kismet2.cpp:819]
UE4Editor_Kismet!FBlueprintEditor::Compile() [d:\buildfarm\buildmachine_++ue4+release-4.11\engine\source\editor\kismet\private\blueprinteditor.cpp:3147]
UE4Editor_Kismet!TBaseSPMethodDelegateInstance<0,FBlueprintEditor,0,TTypeWrapper<void> __cdecl(void)>::Execute() [d:\buildfarm\buildmachine_++ue4+release-4.11\engine\source\runtime\core\public\delegates\delegateinstancesimpl_variadics.inl:321]
UE4Editor_Kismet!TBaseSPMethodDelegateInstance<0,FBlueprintEditor,0,void __cdecl(void)>::ExecuteIfSafe() [d:\buildfarm\buildmachine_++ue4+release-4.11\engine\source\runtime\core\public\delegates\delegateinstancesimpl_variadics.inl:427]
UE4Editor_Slate!FUICommandList::ExecuteAction() [d:\buildfarm\buildmachine_++ue4+release-4.11\engine\source\runtime\slate\private\framework\commands\uicommandlist.cpp:87]
UE4Editor_Slate!SToolBarButtonBlock::OnClicked() [d:\buildfarm\buildmachine_++ue4+release-4.11\engine\source\runtime\slate\private\framework\multibox\stoolbarbuttonblock.cpp:300]
UE4Editor_Slate!TMemberFunctionCaller<SToolBarButtonBlock,FReply (__cdecl SToolBarButtonBlock::*)(void) __ptr64>::operator()<>() [d:\buildfarm\buildmachine_++ue4+release-4.11\engine\source\runtime\core\public\delegates\delegateinstanceinterface_variadics.h:161]
UE4Editor_Slate!TTupleImpl<TIntegerSequence<unsigned int> >::ApplyAfter_ExplicitReturnType<FReply,TMemberFunctionCaller<SToolBarButtonBlock,FReply (__cdecl SToolBarButtonBlock::*)(void) __ptr64> >() [d:\buildfarm\buildmachine_++ue4+release-4.11\engine\source\runtime\core\public\delegates\tuple.h:128]
UE4Editor_Slate!TBaseSPMethodDelegateInstance<0,SToolBarButtonBlock,0,FReply __cdecl(void)>::Execute() [d:\buildfarm\buildmachine_++ue4+release-4.11\engine\source\runtime\core\public\delegates\delegateinstancesimpl_variadics.inl:321]
UE4Editor_Slate!TBaseDelegate<FReply>::Execute() [d:\buildfarm\buildmachine_++ue4+release-4.11\engine\source\runtime\core\public\delegates\delegatesignatureimpl_variadics.inl:521]
UE4Editor_Slate!SButton::OnMouseButtonUp() [d:\buildfarm\buildmachine_++ue4+release-4.11\engine\source\runtime\slate\private\widgets\input\sbutton.cpp:273]
UE4Editor_Slate!<lambda_9ed539f2a96fd1ccd6d2214174cc7705>::operator()() [d:\buildfarm\buildmachine_++ue4+release-4.11\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:4508]
UE4Editor_Slate!FEventRouter::Route<FReply,FEventRouter::FToLeafmostPolicy,FPointerEvent,<lambda_9ed539f2a96fd1ccd6d2214174cc7705> >() [d:\buildfarm\buildmachine_++ue4+release-4.11\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:214]
UE4Editor_Slate!FSlateApplication::RoutePointerUpEvent() [d:\buildfarm\buildmachine_++ue4+release-4.11\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:4498]
UE4Editor_Slate!FSlateApplication::ProcessMouseButtonUpEvent() [d:\buildfarm\buildmachine_++ue4+release-4.11\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:4915]
UE4Editor_Slate!FSlateApplication::OnMouseUp() [d:\buildfarm\buildmachine_++ue4+release-4.11\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:4891]
UE4Editor_Core!FWindowsApplication::ProcessDeferredMessage() [d:\buildfarm\buildmachine_++ue4+release-4.11\engine\source\runtime\core\private\windows\windowsapplication.cpp:1407]
UE4Editor_Core!FWindowsApplication::DeferMessage() [d:\buildfarm\buildmachine_++ue4+release-4.11\engine\source\runtime\core\private\windows\windowsapplication.cpp:1712]
UE4Editor_Core!FWindowsApplication::ProcessMessage() [d:\buildfarm\buildmachine_++ue4+release-4.11\engine\source\runtime\core\private\windows\windowsapplication.cpp:696]
UE4Editor_Core!FWindowsApplication::AppWndProc() [d:\buildfarm\buildmachine_++ue4+release-4.11\engine\source\runtime\core\private\windows\windowsapplication.cpp:618]
user32
user32
UE4Editor_Core!FWindowsPlatformMisc::PumpMessages() [d:\buildfarm\buildmachine_++ue4+release-4.11\engine\source\runtime\core\private\windows\windowsplatformmisc.cpp:884]
UE4Editor!FEngineLoop::Tick() [d:\buildfarm\buildmachine_++ue4+release-4.11\engine\source\runtime\launch\private\launchengineloop.cpp:2604]
UE4Editor!GuardedMain() [d:\buildfarm\buildmachine_++ue4+release-4.11\engine\source\runtime\launch\private\launch.cpp:142]
UE4Editor!GuardedMainWrapper() [d:\buildfarm\buildmachine_++ue4+release-4.11\engine\source\runtime\launch\private\windows\launchwindows.cpp:126]
UE4Editor!WinMain() [d:\buildfarm\buildmachine_++ue4+release-4.11\engine\source\runtime\launch\private\windows\launchwindows.cpp:200]
UE4Editor!__scrt_common_main_seh() [f:\dd\vctools\crt\vcstartup\src\startup\exe_common.inl:264]
kernel32
ntdll

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Fixed

Component	OLD - Anim
Affects Versions	4.11
Target Fix	4.11

Fix Commit	2869891
Main Commit	2873884

Created	Feb 10, 2016
Resolved	Feb 17, 2016
Updated	May 18, 2020

View Jira Issue

UE-26742

Attached Project Crashes When Compiling Character Blueprint

Attached Project Crashes When Compiling Character Blueprint

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