This Jira was created from CrashReports submitted by the public due to the high number of occurrences.
Error message:
Assertion failed: (Index >= 0) & (Index < ArrayNum) [Link Removed] [Line: 833] Array index out of bounds: 1 from an array of size 1
Source Context:
682 {
683 if ( StartIndex == 0 )
684 {
685 // clear the global pointer to the soon-to-be-deleted transaction
686 GUndo = NULL;
687
688 // remove the currently active transaction from the buffer
689 UndoBuffer.Pop();
690 }
691 else
692 {
693 int32 RecordsToKeep = 0;
694 for (int32 ActiveIndex = 0; ActiveIndex <= StartIndex; ++ActiveIndex)
695 {
696 ***** RecordsToKeep += ActiveRecordCounts[ActiveIndex];
697 }
698
699 FTransaction& Transaction = UndoBuffer.Last();
700 Transaction.RemoveRecords(Transaction.GetRecordCount() - RecordsToKeep);
701 }
702
703 // reset the active count
704 ActiveCount = StartIndex;
705 ActiveRecordCounts.SetNum(StartIndex);
706 }
707
708 CheckState();
709 }
710
711
Most recent user affected CL: 3172292
Logs:
[Link Removed]
[Link Removed]
[Link Removed]
Repro steps unknown
UE4Editor_UnrealEd!UTransBuffer::Cancel() [editortransaction.cpp:697] UE4Editor_UnrealEd!FScopedTransaction::Cancel() [scopedtransaction.cpp:48] UE4Editor_UnrealEd!FLevelEditorViewportClient::TrackingStopped() [leveleditorviewport.cpp:2728] UE4Editor_UnrealEd!FMouseDeltaTracker::EndTracking() [mousedeltatracker.cpp:306] UE4Editor_UnrealEd!FEditorViewportClient::StopTracking() [editorviewportclient.cpp:2364] UE4Editor_UnrealEd!FEditorViewportClient::InputKey() [editorviewportclient.cpp:2298] UE4Editor_UnrealEd!FLevelEditorViewportClient::InputKey() [leveleditorviewport.cpp:2468] UE4Editor_Engine!FSceneViewport::OnMouseButtonUp() [sceneviewport.cpp:508] UE4Editor_Slate!SViewport::OnMouseButtonUp() [sviewport.cpp:181] UE4Editor_Slate!<lambda_8d0e9a1da76abd0a756a3a9d775f5ed1>::operator() [slateapplication.cpp:4901] UE4Editor_Slate!FEventRouter::Route<FReply,FEventRouter::FToLeafmostPolicy,FPointerEvent,<lambda_8d0e9a1da76abd0a756a3a9d775f5ed1> >() [slateapplication.cpp:215] UE4Editor_Slate!FSlateApplication::RoutePointerUpEvent() [slateapplication.cpp:4890] UE4Editor_Slate!FSlateApplication::ProcessMouseButtonUpEvent() [slateapplication.cpp:5348] UE4Editor_Slate!FSlateApplication::OnMouseUp() [slateapplication.cpp:5328] UE4Editor_Core!FWindowsApplication::ProcessDeferredMessage() [windowsapplication.cpp:1584] UE4Editor_Core!FWindowsApplication::DeferMessage() [windowsapplication.cpp:1930] UE4Editor_Core!FWindowsApplication::ProcessMessage() [windowsapplication.cpp:747] UE4Editor_Core!FWindowsApplication::AppWndProc() [windowsapplication.cpp:669] user32!UserCallWinProcCheckWow() user32!DispatchMessageWorker() UE4Editor_Core!FWindowsPlatformMisc::PumpMessages() [windowsplatformmisc.cpp:905] UE4Editor!FEngineLoop::Tick() [launchengineloop.cpp:2788] UE4Editor!GuardedMain() [launch.cpp:156] UE4Editor!GuardedMainWrapper() [launchwindows.cpp:126] UE4Editor!WinMain() [launchwindows.cpp:202] UE4Editor!__scrt_common_main_seh() [exe_common.inl:264] kernel32!BaseThreadInitThunk() ntdll!RtlUserThreadStart()
UE-81742 DXGI_ERROR_INVALID_CALL
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There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-38770 in the post.