The project in question: [Link Removed]
The user is experiencing an issue where they've fixed compile errors on their NPC blueprint, and now are unable to open it without experiencing a crash. Right-clicking, Left-Clicking, or attempting to drag the asset into the level all cause the editor to crash.
I have also attached the logs that the user provided.
1. Open the attached project
2. In the Content Browser, go to Content and attempt to open the NPC blueprint.
Result: Editor Crashes
Expected: Blueprint would open without issue.
Access violation - code c0000005 (first/second chance not available)
UE4Editor_Core!scalable_msize() [d:\depot\ue4\engine\source\thirdparty\inteltbb\inteltbb-4.0\src\tbbmalloc\frontend.cpp:2615] UE4Editor_Core!FMallocTBB::Free() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\core\private\hal\malloctbb.cpp:109] UE4Editor_CoreUObject!UArrayProperty::DestroyValueInternal() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\coreuobject\private\uobject\propertyarray.cpp:308] UE4Editor_Engine!UBlueprintGeneratedClass::DestroyPersistentUberGraphFrame() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\engine\private\blueprintgeneratedclass.cpp:599] UE4Editor_Engine!UBlueprintGeneratedClass::DestroyPersistentUberGraphFrame() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\engine\private\blueprintgeneratedclass.cpp:618] UE4Editor_CoreUObject!UObjectBase::SetClass() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\coreuobject\private\uobject\uobjectbase.cpp:194] UE4Editor_UnrealEd!FBlueprintCompileReinstancer::FBlueprintCompileReinstancer() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\editor\unrealed\private\kismet2\kismetreinstanceutilities.cpp:200] UE4Editor_UnrealEd!FBlueprintCompileReinstancer::Create() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\editor\unrealed\public\kismet2\kismetreinstanceutilities.h:97] UE4Editor_UnrealEd!FKismetEditorUtilities::RecompileBlueprintBytecode() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\editor\unrealed\private\kismet2\kismet2.cpp:911] UE4Editor_Engine!UBlueprintGeneratedClass::ConditionalRecompileClass() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\engine\private\blueprintgeneratedclass.cpp:222] UE4Editor_CoreUObject!<lambda_47aca297fbbf71c7b9923e373a8b6de5>::operator()() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\coreuobject\private\blueprint\blueprintsupport.cpp:140] UE4Editor_CoreUObject!FScopedClassDependencyGather::~FScopedClassDependencyGather() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\coreuobject\private\blueprint\blueprintsupport.cpp:156] UE4Editor_CoreUObject!FLinkerLoad::CreateExport() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:3830] UE4Editor_CoreUObject!FLinkerLoad::IndexToObject() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:4014] UE4Editor_CoreUObject!FLinkerLoad::CreateExport() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:3537] UE4Editor_CoreUObject!FLinkerLoad::CreateExportAndPreload() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:2693] UE4Editor_CoreUObject!FLinkerLoad::LoadAllObjects() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:2801] UE4Editor_CoreUObject!LoadPackageInternal() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\coreuobject\private\uobject\uobjectglobals.cpp:1033] UE4Editor_CoreUObject!FLinkerLoad::VerifyImportInner() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:2386] UE4Editor_CoreUObject!FLinkerLoad::VerifyImport() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:2147] UE4Editor_CoreUObject!FLinkerLoad::VerifyImportInner() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:2434] UE4Editor_CoreUObject!FLinkerLoad::VerifyImport() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:2147] UE4Editor_CoreUObject!FLinkerLoad::Verify() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:1937] UE4Editor_CoreUObject!FLinkerLoad::FinalizeCreation() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:1847] UE4Editor_CoreUObject!FLinkerLoad::Tick() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:666] UE4Editor_CoreUObject!FLinkerLoad::CreateLinker() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:404] UE4Editor_CoreUObject!GetPackageLinker() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\coreuobject\private\uobject\linker.cpp:570] UE4Editor_CoreUObject!LoadPackageInternal() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\coreuobject\private\uobject\uobjectglobals.cpp:937] UE4Editor_CoreUObject!FLinkerLoad::VerifyImportInner() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:2386] UE4Editor_CoreUObject!FLinkerLoad::VerifyImport() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:2147] UE4Editor_CoreUObject!FLinkerLoad::VerifyImportInner() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:2434] UE4Editor_CoreUObject!FLinkerLoad::VerifyImport() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:2147] UE4Editor_CoreUObject!FLinkerLoad::Verify() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:1937] UE4Editor_CoreUObject!FLinkerLoad::FinalizeCreation() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:1847] UE4Editor_CoreUObject!FLinkerLoad::Tick() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:666] UE4Editor_CoreUObject!FLinkerLoad::CreateLinker() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:404] UE4Editor_CoreUObject!GetPackageLinker() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\coreuobject\private\uobject\linker.cpp:570] UE4Editor_CoreUObject!LoadPackageInternal() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\coreuobject\private\uobject\uobjectglobals.cpp:937] UE4Editor_CoreUObject!FLinkerLoad::VerifyImportInner() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:2386] UE4Editor_CoreUObject!FLinkerLoad::VerifyImport() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:2147] UE4Editor_CoreUObject!FLinkerLoad::VerifyImportInner() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:2434] UE4Editor_CoreUObject!FLinkerLoad::VerifyImport() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:2147] UE4Editor_CoreUObject!FLinkerLoad::Verify() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:1937] UE4Editor_CoreUObject!FLinkerLoad::FinalizeCreation() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:1847] UE4Editor_CoreUObject!FLinkerLoad::Tick() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:666] UE4Editor_CoreUObject!FLinkerLoad::CreateLinker() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:404] UE4Editor_CoreUObject!GetPackageLinker() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\coreuobject\private\uobject\linker.cpp:570] UE4Editor_CoreUObject!LoadPackageInternal() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\coreuobject\private\uobject\uobjectglobals.cpp:937] UE4Editor_CoreUObject!ResolveName() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\coreuobject\private\uobject\uobjectglobals.cpp:681] UE4Editor_CoreUObject!StaticLoadObjectInternal() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\coreuobject\private\uobject\uobjectglobals.cpp:768] UE4Editor_CoreUObject!StaticLoadObject() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\coreuobject\private\uobject\uobjectglobals.cpp:832] UE4Editor_ContentBrowser!FAssetData::GetAsset() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\assetregistry\public\assetdata.h:208] UE4Editor_ContentBrowser!SContentBrowser::OnAssetsActivated() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\editor\contentbrowser\private\scontentbrowser.cpp:1737] UE4Editor_ContentBrowser!TBaseSPMethodDelegateInstance<0,SContentBrowser,0,TTypeWrapper<void> __cdecl(TArray<FAssetData,FDefaultAllocator> const & __ptr64,enum EAssetTypeActivationMethod::Type)>::Execute() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\core\public\delegates\delegateinstancesimpl_variadics.inl:282] UE4Editor_ContentBrowser!TBaseSPMethodDelegateInstance<0,SContentBrowser,0,void __cdecl(TArray<FAssetData,FDefaultAllocator> const & __ptr64,enum EAssetTypeActivationMethod::Type)>::ExecuteIfSafe() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\core\public\delegates\delegateinstancesimpl_variadics.inl:388] UE4Editor_ContentBrowser!SAssetView::OnListMouseButtonDoubleClick() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\editor\contentbrowser\private\sassetview.cpp:3292] UE4Editor_ContentBrowser!TBaseSPMethodDelegateInstance<0,SAssetView,0,TTypeWrapper<void> __cdecl(TSharedPtr<FAssetViewItem,0>)>::Execute() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\core\public\delegates\delegateinstancesimpl_variadics.inl:282] UE4Editor_ContentBrowser!TBaseSPMethodDelegateInstance<0,SAssetView,0,void __cdecl(TSharedPtr<FAssetViewItem,0>)>::ExecuteIfSafe() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\core\public\delegates\delegateinstancesimpl_variadics.inl:388] UE4Editor_ContentBrowser!TBaseDelegate<void,TSharedPtr<FAssetViewItem,0> >::ExecuteIfBound() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\core\public\delegates\delegatesignatureimpl_variadics.inl:482] UE4Editor_ContentBrowser!SListView<TSharedPtr<FAssetViewItem,0> >::Private_OnItemDoubleClicked() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\slate\public\widgets\views\slistview.h:689] UE4Editor_ContentBrowser!STableRow<TSharedPtr<FAssetViewItem,0> >::OnMouseButtonDoubleClick() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\slate\public\widgets\views\stablerow.h:261] UE4Editor_Slate!<lambda_ab05c44bd3b63117ffdb05809cd69ce7>::operator()() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:4609] UE4Editor_Slate!FEventRouter::Route<FReply,FEventRouter::FBubblePolicy,FPointerEvent,<lambda_ab05c44bd3b63117ffdb05809cd69ce7> >() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:214] UE4Editor_Slate!FSlateApplication::ProcessMouseButtonDoubleClickEvent() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:4607] UE4Editor_Slate!FSlateApplication::OnMouseDoubleClick() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:4590] UE4Editor_Core!FWindowsApplication::ProcessDeferredMessage() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\core\private\windows\windowsapplication.cpp:1346] UE4Editor_Core!FWindowsApplication::DeferMessage() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\core\private\windows\windowsapplication.cpp:1709] UE4Editor_Core!FWindowsApplication::ProcessMessage() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\core\private\windows\windowsapplication.cpp:707] UE4Editor_Core!FWindowsApplication::AppWndProc() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\core\private\windows\windowsapplication.cpp:629] user32 user32 UE4Editor_Core!FWindowsPlatformMisc::PumpMessages() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\core\private\windows\windowsplatformmisc.cpp:884] UE4Editor!FEngineLoop::Tick() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\launch\private\launchengineloop.cpp:2391] UE4Editor!GuardedMain() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\launch\private\launch.cpp:142] UE4Editor!GuardedMainWrapper() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\launch\private\windows\launchwindows.cpp:126] UE4Editor!WinMain() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\launch\private\windows\launchwindows.cpp:200] UE4Editor!__scrt_common_main_seh() [f:\dd\vctools\crt\vcstartup\src\startup\exe_common.inl:264] kernel32 ntdll
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