Unreal Engine Issues and Bug Tracker (UE-23206)

Description
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.
Steps to Reproduce
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.
Callstack
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
Have Comments or More Details?

Head over to the existing Questions & Answers thread and let us know what's up.
0	Login to Vote
Cannot Reproduce
Component	UE - Gameplay - Blueprint
Affects Versions	4.9.2, 4.10
Target Fix	4.11
Fix Commit	2931183
Main Commit	2839850
Release Commit	2830886
Created	Nov 11, 2015
Resolved	Apr 5, 2016
Updated	Apr 27, 2018
View Jira Issue
UE-23206

Attached Project Crashes When Attempting to Open Blueprint

Attached Project Crashes When Attempting to Open Blueprint

Have Comments or More Details?
