Unreal Engine Issues and Bug Tracker (UE-79152)

Description

Changing the Anim Class in the Details Panel before Disable Post Process Blueprint can prevent the crash from occurring. Changing the Animation Mode does not seem to prevent this crash.

The contents of the Animation Blueprint does not seem to matter when disabling post processing. This issue reproduces with an empty Blueprint.

Steps to Reproduce

Create a ThirdPerson template project
Open SK_Mannequin
Navigate to Post Process Anim Blueprint in Asset Details
Select the drop down and select ThirdPerson_AnimBP
From the Content Browser, add SK_Mannequin to the level
With the SK_Mannequin selected in the level, enable Disable Post Process in the Details panel

Results: Crash occurs when disabling Post Process Blueprint.

Callstack

=== Critical error: ===

Assertion failed: UIDToArrayIndexLookupTable.Num() == InContext.Curve.UIDToArrayIndexLUT->Num() [File:D:/Build/++UE4/Sync/Engine/Source/Runtime/Engine/Private/Animation/AnimInstanceProxy.cpp] [Line: 2343]



KERNELBASE.dll!UnknownFunction []
UE4Editor-Core.dll!ReportAssert() [d:\build\++ue4\sync\engine\source\runtime\core\private\windows\windowsplatformcrashcontext.cpp:582]
UE4Editor-Core.dll!FWindowsErrorOutputDevice::Serialize() [d:\build\++ue4\sync\engine\source\runtime\core\private\windows\windowserroroutputdevice.cpp:79]
UE4Editor-Core.dll!FOutputDevice::LogfImpl() [d:\build\++ue4\sync\engine\source\runtime\core\private\misc\outputdevice.cpp:71]
UE4Editor-Core.dll!AssertFailedImplV() [d:\build\++ue4\sync\engine\source\runtime\core\private\misc\assertionmacros.cpp:101]
UE4Editor-Core.dll!FDebug::CheckVerifyFailedImpl() [d:\build\++ue4\sync\engine\source\runtime\core\private\misc\assertionmacros.cpp:445]
UE4Editor-Engine.dll!FAnimInstanceProxy::UpdateCurvesToEvaluationContext() [d:\build\++ue4\sync\engine\source\runtime\engine\private\animation\animinstanceproxy.cpp:2343]
UE4Editor-Engine.dll!USkeletalMeshComponent::ParallelAnimationEvaluation() [d:\build\++ue4\sync\engine\source\runtime\engine\private\components\skeletalmeshcomponent.cpp:3513]
UE4Editor-Engine.dll!USkeletalMeshComponent::DoParallelEvaluationTasks_OnGameThread() [d:\build\++ue4\sync\engine\source\runtime\engine\private\components\skeletalmeshcomponent.cpp:2224]
UE4Editor-Engine.dll!USkeletalMeshComponent::RefreshBoneTransforms() [d:\build\++ue4\sync\engine\source\runtime\engine\private\components\skeletalmeshcomponent.cpp:2136]
UE4Editor-Engine.dll!USkeletalMeshComponent::InitAnim() [d:\build\++ue4\sync\engine\source\runtime\engine\private\components\skeletalmeshcomponent.cpp:666]
UE4Editor-Engine.dll!USkeletalMeshComponent::OnRegister() [d:\build\++ue4\sync\engine\source\runtime\engine\private\components\skeletalmeshcomponent.cpp:525]
UE4Editor-Engine.dll!UActorComponent::ExecuteRegisterEvents() [d:\build\++ue4\sync\engine\source\runtime\engine\private\components\actorcomponent.cpp:1307]
UE4Editor-Engine.dll!FComponentReregisterContextBase::ReRegister() [d:\build\++ue4\sync\engine\source\runtime\engine\public\componentreregistercontext.h:68]
UE4Editor-Engine.dll!UActorComponent::ConsolidatedPostEditChange() [d:\build\++ue4\sync\engine\source\runtime\engine\private\components\actorcomponent.cpp:700]
UE4Editor-Engine.dll!USceneComponent::PostEditChangeProperty() [d:\build\++ue4\sync\engine\source\runtime\engine\private\components\scenecomponent.cpp:519]
UE4Editor-Engine.dll!UPrimitiveComponent::PostEditChangeProperty() [d:\build\++ue4\sync\engine\source\runtime\engine\private\components\primitivecomponent.cpp:925]
UE4Editor-Engine.dll!USkeletalMeshComponent::PostEditChangeProperty() [d:\build\++ue4\sync\engine\source\runtime\engine\private\components\skeletalmeshcomponent.cpp:848]
UE4Editor-CoreUObject.dll!UObject::PostEditChangeChainProperty() [d:\build\++ue4\sync\engine\source\runtime\coreuobject\private\uobject\obj.cpp:447]
UE4Editor-Engine.dll!UActorComponent::PostEditChangeChainProperty() [d:\build\++ue4\sync\engine\source\runtime\engine\private\components\actorcomponent.cpp:746]
UE4Editor-Engine.dll!UPrimitiveComponent::PostEditChangeChainProperty() [d:\build\++ue4\sync\engine\source\runtime\engine\private\components\primitivecomponent.cpp:1069]
UE4Editor-Engine.dll!UMeshComponent::PostEditChangeChainProperty() [d:\build\++ue4\sync\engine\source\runtime\engine\private\components\meshcomponent.cpp:114]
UE4Editor-PropertyEditor.dll!FPropertyNode::NotifyPostChange() [d:\build\++ue4\sync\engine\source\editor\propertyeditor\private\propertynode.cpp:2132]
UE4Editor-PropertyEditor.dll!FPropertyValueImpl::ImportText() [d:\build\++ue4\sync\engine\source\editor\propertyeditor\private\propertyhandleimpl.cpp:571]
UE4Editor-PropertyEditor.dll!FPropertyValueImpl::ImportText() [d:\build\++ue4\sync\engine\source\editor\propertyeditor\private\propertyhandleimpl.cpp:359]
UE4Editor-PropertyEditor.dll!FPropertyValueImpl::ImportText() [d:\build\++ue4\sync\engine\source\editor\propertyeditor\private\propertyhandleimpl.cpp:268]
UE4Editor-PropertyEditor.dll!FPropertyHandleBool::SetValue() [d:\build\++ue4\sync\engine\source\editor\propertyeditor\private\propertyhandleimpl.cpp:3489]
UE4Editor-PropertyEditor.dll!SPropertyEditorBool::OnCheckStateChanged() [d:\build\++ue4\sync\engine\source\editor\propertyeditor\private\userinterface\propertyeditor\spropertyeditorbool.cpp:85]
UE4Editor-PropertyEditor.dll!TBaseSPMethodDelegateInstance<0,SPropertyEditorBool,0,void __cdecl(enum ECheckBoxState)>::ExecuteIfSafe() [d:\build\++ue4\sync\engine\source\runtime\core\public\delegates\delegateinstancesimpl.h:369]
UE4Editor-Slate.dll!SCheckBox::ToggleCheckedState() [d:\build\++ue4\sync\engine\source\runtime\slate\private\widgets\input\scheckbox.cpp:308]
UE4Editor-Slate.dll!SCheckBox::OnMouseButtonUp() [d:\build\++ue4\sync\engine\source\runtime\slate\private\widgets\input\scheckbox.cpp:201]
UE4Editor-Slate.dll!FEventRouter::Route<FReply,FEventRouter::FToLeafmostPolicy,FPointerEvent,<lambda_6c1f6b862bcfb82ea6dcab28fbcc9463> >() [d:\build\++ue4\sync\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:273
UE4Editor-Slate.dll!FSlateApplication::RoutePointerUpEvent() [d:\build\++ue4\sync\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:5707]
UE4Editor-Slate.dll!FSlateApplication::ProcessMouseButtonUpEvent() [d:\build\++ue4\sync\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:6312]
UE4Editor-Slate.dll!FSlateApplication::OnMouseUp() [d:\build\++ue4\sync\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:6285]
UE4Editor-ApplicationCore.dll!FWindowsApplication::ProcessDeferredMessage() [d:\build\++ue4\sync\engine\source\runtime\applicationcore\private\windows\windowsapplication.cpp:1880]
UE4Editor-ApplicationCore.dll!FWindowsApplication::DeferMessage() [d:\build\++ue4\sync\engine\source\runtime\applicationcore\private\windows\windowsapplication.cpp:2332]
UE4Editor-ApplicationCore.dll!FWindowsApplication::ProcessMessage() [d:\build\++ue4\sync\engine\source\runtime\applicationcore\private\windows\windowsapplication.cpp:1560]
UE4Editor-ApplicationCore.dll!FWindowsApplication::AppWndProc() [d:\build\++ue4\sync\engine\source\runtime\applicationcore\private\windows\windowsapplication.cpp:790]
USER32.dll!UnknownFunction []
USER32.dll!UnknownFunction []
UE4Editor-ApplicationCore.dll!FWindowsPlatformApplicationMisc::PumpMessages() [d:\build\++ue4\sync\engine\source\runtime\applicationcore\private\windows\windowsplatformapplicationmisc.cpp:130]
UE4Editor.exe!FEngineLoop::Tick() [d:\build\++ue4\sync\engine\source\runtime\launch\private\launchengineloop.cpp:4169]
UE4Editor.exe!GuardedMain() [d:\build\++ue4\sync\engine\source\runtime\launch\private\launch.cpp:173]
UE4Editor.exe!GuardedMainWrapper() [d:\build\++ue4\sync\engine\source\runtime\launch\private\windows\launchwindows.cpp:147]
UE4Editor.exe!WinMain() [d:\build\++ue4\sync\engine\source\runtime\launch\private\windows\launchwindows.cpp:279]
UE4Editor.exe!__scrt_common_main_seh() [d:\agent\_work\1\s\src\vctools\crt\vcstartup\src\startup\exe_common.inl:288]
KERNEL32.DLL!UnknownFunction []
ntdll.dll!UnknownFunction []

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Fixed

Component	OLD - Anim
Affects Versions	4.23
Target Fix	4.24

Fix Commit	9484759

Created	Aug 20, 2019
Resolved	Nov 4, 2019
Updated	Mar 2, 2020

View Jira Issue

UE-79152

Crash after Disabling Post Process Blueprint on a Skeletal Mesh

Crash after Disabling Post Process Blueprint on a Skeletal Mesh

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