Description

Crash occurs when setting post process animation blueprint while the anim bp has a Sub Graph Input linked.

This crash doesn't occur if the node is not connected.

Steps to Reproduce

Test asset submitted in Release-4.14 at CL 3176996

  1. Open QAGame in editor.
  2. Open SK_Mannequin in Persona.
  3. Click the dropdown for Post Process Anim Blueprint and select PostProcessAnimBP.

RESULT:

Crash.

Callstack
UE4Editor_Engine!FBaseBlendedCurve<FDefaultAllocator>::CopyFrom() animcurvetypes.h:480 
UE4Editor_Engine!USkeletalMeshComponent::EvaluatePostProcessMeshInstance() skeletalmeshcomponent.cpp:1376 
UE4Editor_Engine!USkeletalMeshComponent::PerformAnimationEvaluation() skeletalmeshcomponent.cpp:1361 
UE4Editor_Engine!USkeletalMeshComponent::RefreshBoneTransforms() skeletalmeshcomponent.cpp:1573 
UE4Editor_Engine!USkeletalMeshComponent::InitAnim() skeletalmeshcomponent.cpp:458 
UE4Editor_Engine!USkeletalMeshComponent::SetSkeletalMesh() skeletalmeshcomponent.cpp:1825 
UE4Editor_UnrealEd!FSkeletalMeshThumbnailScene::SetSkeletalMesh() thumbnailhelpers.cpp:402 
UE4Editor_UnrealEd!USkeletalMeshThumbnailRenderer::Draw() skeletalmeshthumbnailrenderer.cpp:27 
UE4Editor_UnrealEd!ThumbnailTools::RenderThumbnail() objecttools.cpp:3830 
UE4Editor_UnrealEd!ThumbnailTools::GenerateThumbnailForObjectToSaveToDisk() objecttools.cpp:3896 
UE4Editor_UnrealEd!UUnrealEdEngine::GeneratePackageThumbnailsIfRequired() unrealedsrv.cpp:388 
UE4Editor_UnrealEd!UUnrealEdEngine::Exec() unrealedsrv.cpp:606 
UE4Editor_UnrealEd!FEditorFileUtils::AutosaveContentPackagesEx() filehelpers.cpp:2437 
UE4Editor_UnrealEd!FPackageAutoSaver::AttemptAutoSave() packageautosaver.cpp:189 
UE4Editor_UnrealEd!UUnrealEdEngine::Tick() unrealedengine.cpp:399 
UE4Editor!FEngineLoop::Tick() launchengineloop.cpp:2859 
UE4Editor!GuardedMain() launch.cpp:152 
UE4Editor!GuardedMainWrapper() launchwindows.cpp:126 
UE4Editor!WinMain() launchwindows.cpp:202 
UE4Editor!__scrt_common_main_seh() exe_common.inl:264 
kernel32!<Unknown> 
ntdll!<Unknown> 

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Fixed
ComponentAnim - Animation
Affects Versions4.14
Target Fix4.14
Fix Commit3178146
Release Commit3178420
CreatedOct 27, 2016
ResolvedOct 28, 2016
UpdatedApr 27, 2018