This is a common crash affecting users in 4.16.
User Descriptions
Source Context
787 // NOTE: The following is an Unreal extension to standard shared_ptr behavior 788 FORCEINLINE TSharedRef< ObjectType, Mode > ToSharedRef() const 789 { 790 // If this assert goes off, it means a shared reference was created from a shared pointer that was nullptr. 791 // Shared references are never allowed to be null. Consider using TSharedPtr instead. 792 check( IsValid() ); 793 ***** return TSharedRef< ObjectType, Mode >( *this ); 794 }
repro steps currently unknown
Assertion failed: IsValid() [File:D:\Build\++UE4+Release-4.16+Compile\Sync\Engine\Source\Runtime\Core\Public\Templates/SharedPointer.h] [Line: 793] UE4Editor_Persona!TSharedPtr<IEditableSkeleton,0>::ToSharedRef() [sharedpointer.h:794] UE4Editor_Persona!FAnimationEditorPreviewScene::GetEditableSkeleton() [animationeditorpreviewscene.h:210] UE4Editor_Persona!FAnimationEditorPreviewScene::SetPreviewMesh() [animationeditorpreviewscene.cpp:97] UE4Editor_UnrealEd!UEditorEngine::BroadcastPostUndo() [editorserver.cpp:5203] UE4Editor_UnrealEd!UEditorEngine::HandleTransactorUndo() [editorserver.cpp:1220] UE4Editor_UnrealEd!TBaseUObjectMethodDelegateInstance<0,UEditorEngine,TTypeWrapper<void> __cdecl() [delegateinstancesimpl.h:766] UE4Editor_UnrealEd!TBaseUObjectMethodDelegateInstance<0,UEditorEngine,void __cdecl() [delegateinstancesimpl.h:856] UE4Editor_UnrealEd!TBaseMulticastDelegate<void,FUndoSessionContext,bool>::Broadcast() [delegatesignatureimpl.inl:937] UE4Editor_UnrealEd!UTransBuffer::Undo() [editortransaction.cpp:866] UE4Editor_UnrealEd!UEditorEngine::Exec_Transaction() [editorserver.cpp:5198] UE4Editor_UnrealEd!UEditorEngine::Exec() [editorserver.cpp:5645] UE4Editor_UnrealEd!UUnrealEdEngine::Exec() [unrealedsrv.cpp:670] UE4Editor_MainFrame!FMainFrameActionCallbacks::ExecuteExecCommand() [mainframeactions.cpp:969] UE4Editor_MainFrame!TBaseStaticDelegateInstance<void __cdecl() [delegateinstancesimpl.h:1027] UE4Editor_Slate!FUICommandList::ConditionalProcessCommandBindings() [uicommandlist.cpp:216] UE4Editor_Slate!FUICommandList::ProcessCommandBindings() [uicommandlist.cpp:160] UE4Editor_MainFrame!FMainFrameActionCallbacks::OnUnhandledKeyDownEvent() [mainframeactions.cpp:211] UE4Editor_MainFrame!UE4Tuple_Private::TTupleImpl<TIntegerSequence<unsigned int> >::ApplyAfter<FReply() [tuple.h:497] UE4Editor_MainFrame!TBaseStaticDelegateInstance<FReply __cdecl() [delegateinstancesimpl.h:958] UE4Editor_Slate!TBaseDelegate<FReply,FKeyEvent const & __ptr64>::Execute() [delegatesignatureimpl.inl:537] UE4Editor_Slate!FSlateApplication::ProcessKeyDownEvent() [slateapplication.cpp:4641] UE4Editor_Slate!FSlateApplication::OnKeyDown() [slateapplication.cpp:4541] UE4Editor_Core!FWindowsApplication::ProcessDeferredMessage() [windowsapplication.cpp:1539] 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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| 0 |
| Component | OLD - Anim |
|---|---|
| Affects Versions | 4.16 |
| Target Fix | 4.18 |
| Created | Jul 13, 2017 |
|---|---|
| Resolved | Aug 30, 2017 |
| Updated | May 18, 2020 |