Description

This is a somewhat common crash that appears to occur only in 4.17.1 (possible regression?). Users have not provided any description of their actions when the crash occurs.

Source Context

  20       	TArray<float> Scores;
   21       
   22       	void ResetScore(int32 NewCount)
   23       	{
   24       		Scores.Reset(NewCount);
   25       		Scores.AddZeroed(NewCount);
   26       	}
   27       
   28       	void SetScore(int32 Index, float NewScore)
   29       	{
   30 ***** 		Scores[Index] = NewScore;
   31       	}
   32       
   33       	float GetScore(int32 Index) const
   34       	{
   35       		return Scores[Index];
   36       	}
Steps to Reproduce
  1. Open QAGame
  2. Open the CLOTH_SimpleCloth_Skeleton skeleton
  3. Click on the Retarget Manager button
  4. In the Select Rig dropdown choose "Select Humanoid Rig"
  5. Click on Auto Mapping button

Result: Crash

Callstack
Assertion failed: (Index >= 0) & (Index < ArrayNum) [File:D:\Build\++UE4+Release-4.17+Compile\Sync\Engine\Source\Runtime\Core\Public\Containers/Array.h] [Line: 596] 
Array index out of bounds: -1 from an array of size 1

UE4Editor_Persona!FBoneDescription::SetScore() [bonemappinghelper.h:31]
UE4Editor_Persona!FBoneMappingHelper::TryMatch() [bonemappinghelper.cpp:273]
UE4Editor_Persona!SRigWindow::OnAutoMapping() [srigwindow.cpp:355]
UE4Editor_Persona!TMemberFunctionCaller<SRigWindow,FReply() [delegateinstanceinterface.h:165]
UE4Editor_Persona!UE4Tuple_Private::TTupleImpl<TIntegerSequence<unsigned int> >::ApplyAfter<TMemberFunctionCaller<SRigWindow,FReply() [tuple.h:497]
UE4Editor_Persona!TBaseSPMethodDelegateInstance<0,SRigWindow,0,FReply __cdecl() [delegateinstancesimpl.h:327]
UE4Editor_Slate!TBaseDelegate<FReply>::Execute() [delegatesignatureimpl.inl:537]
UE4Editor_Slate!SButton::OnMouseButtonUp() [sbutton.cpp:282]
UE4Editor_Slate!<lambda_1002768c627006711ef2f351a87ec0e7>::operator() [slateapplication.cpp:5199]
UE4Editor_Slate!FEventRouter::Route<FReply,FEventRouter::FToLeafmostPolicy,FPointerEvent,<lambda_1002768c627006711ef2f351a87ec0e7> >() [slateapplication.cpp:232]
UE4Editor_Slate!FSlateApplication::RoutePointerUpEvent() [slateapplication.cpp:5188]
UE4Editor_Slate!FSlateApplication::ProcessMouseButtonUpEvent() [slateapplication.cpp:5690]
UE4Editor_Slate!FSlateApplication::OnMouseUp() [slateapplication.cpp:5670]
UE4Editor_Core!FWindowsApplication::ProcessDeferredMessage() [windowsapplication.cpp:1718]
UE4Editor_Core!FWindowsApplication::DeferMessage() [windowsapplication.cpp:2161]
UE4Editor_Core!FWindowsApplication::ProcessMessage() [windowsapplication.cpp:881]
UE4Editor_Core!FWindowsApplication::AppWndProc() [windowsapplication.cpp:721]
user32!UserCallWinProcCheckWow()
user32!DispatchMessageWorker()
UE4Editor_Core!FWindowsPlatformMisc::PumpMessages() [windowsplatformmisc.cpp:1009]
UE4Editor!FEngineLoop::Tick() [launchengineloop.cpp:3151]
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 Versions4.17
Target Fix4.18
Fix Commit3645223
Main Commit3656992
Release Commit3645223
CreatedSep 14, 2017
ResolvedSep 15, 2017
UpdatedMay 18, 2020
View Jira Issue