Possibly related to [Link Removed]
RESULT
Editor may crash
FREQUENCY
2/40 (came across the crash twice while testing exporting, so not a one-off crash)
> UE4Editor-UnrealEd.dll!UnFbx::FFbxExporter::FillExportOptions(bool BatchMode, bool bShowOptionDialog, const FString & FullPath, bool & OutOperationCanceled, bool & bOutExportAll) Line 152 C++ UE4Editor-Matinee.dll!FMatinee::OnContextGroupExportAnimFBX() Line 2037 C++ UE4Editor-Matinee.dll!TBaseSPMethodDelegateInstance<0,FMatinee,0,TTypeWrapper<void> __cdecl(void)>::Execute() Line 327 C++ UE4Editor-Matinee.dll!TBaseSPMethodDelegateInstance<0,FMatinee,0,void __cdecl(void)>::ExecuteIfSafe() Line 434 C++ UE4Editor-Slate.dll!FUICommandList::ExecuteAction(const TSharedRef<FUICommandInfo const ,0> InUICommandInfo) Line 97 C++ UE4Editor-Slate.dll!SMenuEntryBlock::OnClicked(bool bCheckBoxClicked) Line 1082 C++ UE4Editor-Slate.dll!SMenuEntryBlock::OnMenuItemButtonClicked() Line 1042 C++ UE4Editor-Slate.dll!TMemberFunctionCaller<SMenuEntryBlock,FReply (__cdecl SMenuEntryBlock::*)(void) __ptr64>::operator()<>() Line 165 C++ UE4Editor-Slate.dll!UE4Tuple_Private::TTupleImpl<TIntegerSequence<unsigned int> >::ApplyAfter<TMemberFunctionCaller<SMenuEntryBlock,FReply (__cdecl SMenuEntryBlock::*)(void) __ptr64> >(TMemberFunctionCaller<SMenuEntryBlock,FReply (__cdecl SMenuEntryBlock::*)(void)> && Func) Line 497 C++ UE4Editor-Slate.dll!TBaseSPMethodDelegateInstance<0,SMenuEntryBlock,0,FReply __cdecl(void)>::Execute() Line 327 C++ UE4Editor-Slate.dll!TBaseDelegate<FReply>::Execute() Line 537 C++ UE4Editor-Slate.dll!SButton::OnMouseButtonUp(const FGeometry & MyGeometry, const FPointerEvent & MouseEvent) Line 282 C++ UE4Editor-Slate.dll!SMenuEntryButton::OnMouseButtonUp(const FGeometry & MyGeometry, const FPointerEvent & MouseEvent) Line 439 C++ UE4Editor-Slate.dll!FSlateApplication::RoutePointerUpEvent::__l8::<lambda>(const FArrangedWidget & TargetWidget, const FPointerEvent & Event) Line 5254 C++ UE4Editor-Slate.dll!FEventRouter::Route<FReply,FEventRouter::FToLeafmostPolicy,FPointerEvent,FReply <lambda>(const FArrangedWidget &, const FPointerEvent &) >(FSlateApplication * ThisApplication, FEventRouter::FToLeafmostPolicy RoutingPolicy, FPointerEvent EventCopy, const FSlateApplication::RoutePointerUpEvent::__l8::FReply <lambda>(const FArrangedWidget &, const FPointerEvent &) & Lambda) Line 234 C++ UE4Editor-Slate.dll!FSlateApplication::RoutePointerUpEvent(FWidgetPath & WidgetsUnderPointer, FPointerEvent & PointerEvent) Line 5243 C++ UE4Editor-Slate.dll!FSlateApplication::ProcessMouseButtonUpEvent(FPointerEvent & MouseEvent) Line 5745 C++ UE4Editor-Slate.dll!FSlateApplication::OnMouseUp(const EMouseButtons::Type Button, const FVector2D CursorPos) Line 5725 C++ UE4Editor-ApplicationCore.dll!FWindowsApplication::ProcessDeferredMessage(const FDeferredWindowsMessage & DeferredMessage) Line 1725 C++ UE4Editor-ApplicationCore.dll!FWindowsApplication::DeferMessage(TSharedPtr<FWindowsWindow,0> & NativeWindow, HWND__ * InHWnd, unsigned int InMessage, unsigned __int64 InWParam, __int64 InLParam, int MouseX, int MouseY, unsigned int RawInputFlags) Line 2171 C++ UE4Editor-ApplicationCore.dll!FWindowsApplication::ProcessMessage(HWND__ * hwnd, unsigned int msg, unsigned __int64 wParam, __int64 lParam) Line 888 C++ UE4Editor-ApplicationCore.dll!FWindowsApplication::AppWndProc(HWND__ * hwnd, unsigned int msg, unsigned __int64 wParam, __int64 lParam) Line 725 C++ [External Code] UE4Editor-ApplicationCore.dll!FWindowsPlatformApplicationMisc::PumpMessages(bool bFromMainLoop) Line 129 C++ UE4Editor.exe!FEngineLoop::Tick() Line 3219 C++ UE4Editor.exe!GuardedMain(const wchar_t * CmdLine, HINSTANCE__ * hInInstance, HINSTANCE__ * hPrevInstance, int nCmdShow) Line 166 C++ UE4Editor.exe!GuardedMainWrapper(const wchar_t * CmdLine, HINSTANCE__ * hInInstance, HINSTANCE__ * hPrevInstance, int nCmdShow) Line 134 C++ UE4Editor.exe!WinMain(HINSTANCE__ * hInInstance, HINSTANCE__ * hPrevInstance, char * __formal, int nCmdShow) Line 210 C++ [External Code]
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-50142 in the post.