This is a trending crash coming out of the 4.18 release. Users have not provided any descriptions of their actions when the crash occurred.
Source Context
2014 USkeletalMesh *ImportedSkelMesh = Cast<USkeletalMesh>(NewObject); 2015 //If we have import some morph target we have to rebuild the render resources since morph target are now using GPU 2016 ***** if (ImportedSkelMesh->MorphTargets.Num() > 0) 2017 { 2018 ImportedSkelMesh->ReleaseResources(); 2019 //Rebuild the resources with a post edit change since we have added some morph targets 2020 ImportedSkelMesh->PostEditChange(); 2021 }
repro steps currently unknown
Access violation - code c0000005 (first/second chance not available) UE4Editor_UnrealEd!UFbxSceneImportFactory::ImportOneSkeletalMesh() [fbxsceneimportfactory.cpp:2017] UE4Editor_UnrealEd!UFbxSceneImportFactory::ImportAllSkeletalMesh() [fbxsceneimportfactory.cpp:2050] UE4Editor_UnrealEd!UFbxSceneImportFactory::FactoryCreateBinary() [fbxsceneimportfactory.cpp:1142] UE4Editor_UnrealEd!UFbxSceneImportFactory::FactoryCreateBinary() [fbxsceneimportfactory.cpp:880] UE4Editor_UnrealEd!UFbxSceneImportFactory::FactoryCreateFile() [fbxsceneimportfactory.cpp:862] UE4Editor_UnrealEd!UFactory::ImportObject() [factory.cpp:169] UE4Editor_AssetTools!UAssetToolsImpl::ImportAssetsInternal() [assettools.cpp:1535] UE4Editor_AssetTools!UAssetToolsImpl::ImportAssets() [assettools.cpp:783] UE4Editor_UnrealEd!FEditorFileUtils::Import() [filehelpers.cpp:1149] UE4Editor_UnrealEd!FEditorFileUtils::Import() [filehelpers.cpp:1099] UE4Editor_LevelEditor!TBaseStaticDelegateInstance<void __cdecl() [delegateinstancesimpl.h:1027] UE4Editor_Slate!FUICommandList::ExecuteAction() [uicommandlist.cpp:97] UE4Editor_Slate!SMenuEntryBlock::OnClicked() [smenuentryblock.cpp:1028] UE4Editor_Slate!SMenuEntryBlock::OnMenuItemButtonClicked() [smenuentryblock.cpp:988] UE4Editor_Slate!TMemberFunctionCaller<SMenuEntryBlock,FReply() [delegateinstanceinterface.h:165] UE4Editor_Slate!UE4Tuple_Private::TTupleImpl<TIntegerSequence<unsigned int> >::ApplyAfter<TMemberFunctionCaller<SMenuEntryBlock,FReply() [tuple.h:497] UE4Editor_Slate!TBaseSPMethodDelegateInstance<0,SMenuEntryBlock,0,FReply __cdecl() [delegateinstancesimpl.h:327] UE4Editor_Slate!TBaseDelegate<FReply>::Execute() [delegatesignatureimpl.inl:537] UE4Editor_Slate!SButton::OnMouseButtonUp() [sbutton.cpp:282] UE4Editor_Slate!SMenuEntryButton::OnMouseButtonUp() [smenuentryblock.cpp:385] UE4Editor_Slate!<lambda_1002768c627006711ef2f351a87ec0e7>::operator() [slateapplication.cpp:5263] UE4Editor_Slate!FEventRouter::Route<FReply,FEventRouter::FToLeafmostPolicy,FPointerEvent,<lambda_1002768c627006711ef2f351a87ec0e7> >() [slateapplication.cpp:234] UE4Editor_Slate!FSlateApplication::RoutePointerUpEvent() [slateapplication.cpp:5252] UE4Editor_Slate!FSlateApplication::ProcessMouseButtonUpEvent() [slateapplication.cpp:5750] UE4Editor_Slate!FSlateApplication::OnMouseUp() [slateapplication.cpp:5730] UE4Editor_ApplicationCore!FWindowsApplication::ProcessDeferredMessage() [windowsapplication.cpp:1725] UE4Editor_ApplicationCore!FWindowsApplication::DeferMessage() [windowsapplication.cpp:2171] UE4Editor_ApplicationCore!FWindowsApplication::ProcessMessage() [windowsapplication.cpp:888] UE4Editor_ApplicationCore!FWindowsApplication::AppWndProc() [windowsapplication.cpp:725] user32!UserCallWinProcCheckWow() user32!DispatchMessageWorker() UE4Editor_ApplicationCore!FWindowsPlatformApplicationMisc::PumpMessages() [windowsplatformapplicationmisc.cpp:129] UE4Editor!FEngineLoop::Tick() [launchengineloop.cpp:3220] 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()
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-52255 in the post.