Description

User is reporting that the editor will crash after lightmass has finished building and they click to save the project.

Steps to Reproduce

Cannot reproduce locally.

User is building a large world that take 10+ hours with lots of meshes. When lighting build is complete and they hit "save" the project will crash.

Callstack

Crash Reporter Link: [Link Removed]

UE4Editor_Core! FFileHandleWindows::Seek() windowsplatformfile.cpp:60
UE4Editor_Core! FArchiveFileWriterGeneric::Seek() filemanagergeneric.cpp:715
UE4Editor_Core! FArchive::SerializeCompressed() archive.cpp:690
UE4Editor_CoreUObject! FUntypedBulkData::SerializeBulkData() bulkdata.cpp:1009
UE4Editor_CoreUObject! UPackage::SavePackage() savepackage.cpp:3455
UE4Editor_UnrealEd! UEditorEngine::SavePackage() editor.cpp:4416
UE4Editor_UnrealEd! UEditorEngine::Exec_Obj() editorserver.cpp:4162
UE4Editor_UnrealEd! UEditorEngine::Exec() editorserver.cpp:5238
UE4Editor_UnrealEd! UUnrealEdEngine::Exec() unrealedsrv.cpp:742
UE4Editor_UnrealEd! SaveWorld() filehelpers.cpp:526
UE4Editor_UnrealEd! FEditorFileUtils::SaveMap() filehelpers.cpp:1994
UE4Editor_UnrealEd! InternalSavePackage() filehelpers.cpp:2346
UE4Editor_UnrealEd! FEditorFileUtils::PromptForCheckoutAndSave() filehelpers.cpp:2873
UE4Editor_UnrealEd! InternalSavePackages() filehelpers.cpp:2460
UE4Editor_UnrealEd! FEditorFileUtils::SaveDirtyPackages() filehelpers.cpp:2574
UE4Editor_MainFrame! FMainFrameHandler::CanCloseEditor() mainframehandler.h:124
UE4Editor_MainFrame! FMainFrameHandler::CloseRootWindowOverride() mainframehandler.h:143
UE4Editor_SlateCore! SWindow::RequestDestroyWindow() swindow.cpp:1055
UE4Editor_Slate! SWindowTitleBar::CloseButton_OnClicked() swindowtitlebar.h:415
UE4Editor_Slate! TMemberFunctionCaller<SWindowTitleBar,FReply() delegateinstanceinterface_variadics.h:161
UE4Editor_Slate! TTupleImpl<TIntegerSequence<> >::ApplyAfter_ExplicitReturnType<FReply,TMemberFunctionCaller<SWindowTitleBar,FReply() tuple.h:113
UE4Editor_Slate! TBaseSPMethodDelegateInstance<0,SWindowTitleBar,0,FReply __cdecl() delegateinstancesimpl_variadics.inl:282
UE4Editor_Slate! TBaseDelegate<FReply>::Execute() delegatesignatureimpl_variadics.inl:439
UE4Editor_Slate! SButton::OnMouseButtonUp() sbutton.cpp:228
UE4Editor_Slate! <lambda_de96dc3471181973108233c6db1f9843>::operator() slateapplication.cpp:3985
UE4Editor_Slate! FEventRouter::Route<FReply,FEventRouter::FToLeafmostPolicy,FPointerEvent,<lambda_de96dc3471181973108233c6db1f9843> >() slateapplication.cpp:202
UE4Editor_Slate! FSlateApplication::ProcessMouseButtonUpEvent() slateapplication.cpp:3988
UE4Editor_Slate! FSlateApplication::OnMouseUp() slateapplication.cpp:3949
UE4Editor_Core! FWindowsApplication::ProcessDeferredMessage() windowsapplication.cpp:1373
UE4Editor_Core! FWindowsApplication::DeferMessage() windowsapplication.cpp:1669
UE4Editor_Core! FWindowsApplication::ProcessMessage() windowsapplication.cpp:742
UE4Editor_Core! FWindowsApplication::AppWndProc() windowsapplication.cpp:604
user32! UserCallWinProcCheckWow()
user32! DispatchMessageWorker()
UE4Editor_Core! FWindowsPlatformMisc::PumpMessages() windowsplatformmisc.cpp:774
UE4Editor! FEngineLoop::Tick() launchengineloop.cpp:2233
UE4Editor! GuardedMain() launch.cpp:142
UE4Editor! GuardedMainWrapper() launchwindows.cpp:126
UE4Editor! WinMain() launchwindows.cpp:202

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Fixed
ComponentCore
Affects Versions4.7.1
Target Fix4.8
Fix Commit2493533
CreatedMar 19, 2015
ResolvedMar 27, 2015
UpdatedFeb 5, 2017