Description

This is a common crash in the 4.16 release. Users have not provided any descriptions, so additional information is currently unavailable.

Source Context

 804       	else if (USkeletalMeshComponent* SkeletalMeshComponent = Cast<USkeletalMeshComponent>(MeshComponent))
  805       	{
  806       		TUniquePtr< FSkeletalMeshComponentRecreateRenderStateContext > RecreateRenderStateContext;
  807       		USkeletalMesh* Mesh = SkeletalMeshComponent->SkeletalMesh;
  808       
  809       		// Dirty the mesh
  810 ***** 		Mesh->SetFlags(RF_Transactional);
  811       		Mesh->Modify();
  812       		Mesh->bHasVertexColors = true;
Steps to Reproduce

repro steps currently unknown. Based on source context this seems related to vertex painting SkelMeshes

Callstack
UE4Editor_MeshPaint!MeshPaintHelpers::FillVertexColors() [meshpainthelpers.cpp:811]
UE4Editor_MeshPaintMode!FPaintModePainter::ApplyVertexColorAction() [paintmodepainter.cpp:532]
UE4Editor_MeshPaintMode!<lambda_4b09263892b633489c5e248eb61ebf55>::operator() [spaintmodewidget.cpp:150]
UE4Editor_MeshPaintMode!Invoke<<lambda_4b09263892b633489c5e248eb61ebf55> & __ptr64,int>() [invoke.h:45]
UE4Editor_MeshPaintMode!UE4Function_Private::TFunctionRefCaller<<lambda_4b09263892b633489c5e248eb61ebf55>,FReply __cdecl() [function.h:235]
UE4Editor_MeshPaintMode!UE4Function_Private::TFunctionRefBase<TFunction<FReply __cdecl() [function.h:283]
UE4Editor_MeshPaintMode!<lambda_562d711ae821d86c56667d3d380749c7>::operator() [spaintmodewidget.cpp:190]
UE4Editor_MeshPaintMode!UE4Tuple_Private::TTupleImpl<TIntegerSequence<unsigned int> >::ApplyAfter<<lambda_562d711ae821d86c56667d3d380749c7> const & __ptr64>() [tuple.h:497]
UE4Editor_MeshPaintMode!TBaseFunctorDelegateInstance<FReply __cdecl() [delegateinstancesimpl.h:1132]
UE4Editor_Slate!TBaseDelegate<FReply>::Execute() [delegatesignatureimpl.inl:537]
UE4Editor_Slate!SButton::OnMouseButtonUp() [sbutton.cpp:278]
UE4Editor_Slate!<lambda_8d0e9a1da76abd0a756a3a9d775f5ed1>::operator() [slateapplication.cpp:5049]
UE4Editor_Slate!FEventRouter::Route<FReply,FEventRouter::FToLeafmostPolicy,FPointerEvent,<lambda_8d0e9a1da76abd0a756a3a9d775f5ed1> >() [slateapplication.cpp:239]
UE4Editor_Slate!FSlateApplication::RoutePointerUpEvent() [slateapplication.cpp:5038]
UE4Editor_Slate!FSlateApplication::ProcessMouseButtonUpEvent() [slateapplication.cpp:5515]
UE4Editor_Slate!FSlateApplication::OnMouseUp() [slateapplication.cpp:5495]
UE4Editor_Core!FWindowsApplication::ProcessDeferredMessage() [windowsapplication.cpp:1704]
UE4Editor_Core!FWindowsApplication::DeferMessage() [windowsapplication.cpp:2127]
UE4Editor_Core!FWindowsApplication::ProcessMessage() [windowsapplication.cpp:867]
UE4Editor_Core!FWindowsApplication::AppWndProc() [windowsapplication.cpp:714]
user32!UserCallWinProcCheckWow()
user32!DispatchMessageWorker()
UE4Editor_Core!FWindowsPlatformMisc::PumpMessages() [windowsplatformmisc.cpp:1009]
UE4Editor!FEngineLoop::Tick() [launchengineloop.cpp:3058]
UE4Editor!GuardedMain() [launch.cpp:166]
UE4Editor!GuardedMainWrapper() [launchwindows.cpp:134]
UE4Editor!WinMain() [launchwindows.cpp:210]
UE4Editor!__scrt_common_main_seh() [exe_common.inl:253]
kernel32!BaseThreadInitThunk()
ntdll!RtlUserThreadStart()

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Fixed
ComponentOLD - Anim
Affects Versions4.16
Target Fix4.17
Fix Commit3521071
Main Commit3555226
Release Commit3521071
CreatedJun 27, 2017
ResolvedJul 5, 2017
UpdatedApr 27, 2018