When the 'Show Friendly Variable Names' option is set to false in Editor preferences, attempting to create (once you press 'Enter' to accept the new Blueprint name) or open a Blueprint causes the editor to crash.
User's description: "If you turn off show friendly variable names any time you try to open a blueprint or animation blueprint the editor crashes"
Found in 4.21 Preview 1 CL# 4435822. Reproduced in 4.22 Main CL# 4457235
Unable to reproduce in 4.20.3 CL# 4369336. This is a regression.
Result: Editor Crashes
Expected: Blueprint would be created successfully.
Assertion failed: !InClass || (InClass->ClassWithin && InClass->ClassConstructor) [File:D:\Build\++UE4\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\UObjectGlobals.cpp] [Line: 2331] UE4Editor_Core!FDebug::AssertFailed() [d:\build\++ue4\sync\engine\source\runtime\core\private\misc\assertionmacros.cpp:422] UE4Editor_CoreUObject!StaticAllocateObject() [d:\build\++ue4\sync\engine\source\runtime\coreuobject\private\uobject\uobjectglobals.cpp:2333] UE4Editor_CoreUObject!UClass::CreateDefaultObject() [d:\build\++ue4\sync\engine\source\runtime\coreuobject\private\uobject\class.cpp:3015] UE4Editor_CoreUObject!UClass::GetDefaultObject() [d:\build\++ue4\sync\engine\source\runtime\coreuobject\public\uobject\class.h:2432] UE4Editor_Kismet!FTemporarilyUseFriendlyNodeTitles::ForceVisualizationCacheClear() [d:\build\++ue4\sync\engine\source\editor\kismet\private\findinblueprintmanager.cpp:262] UE4Editor_Kismet!FFindInBlueprintSearchManager::GatherBlueprintSearchMetadata() [d:\build\++ue4\sync\engine\source\editor\kismet\private\findinblueprintmanager.cpp:1658] UE4Editor_Kismet!FFindInBlueprintSearchManager::AddOrUpdateBlueprintSearchMetadata() [d:\build\++ue4\sync\engine\source\editor\kismet\private\findinblueprintmanager.cpp:1787] UE4Editor_Kismet!FBlueprintCompilationManagerImpl::FlushCompilationQueueImpl() [d:\build\++ue4\sync\engine\source\editor\kismet\private\blueprintcompilationmanager.cpp:842] UE4Editor_Kismet!FBlueprintCompilationManagerImpl::CompileSynchronouslyImpl() [d:\build\++ue4\sync\engine\source\editor\kismet\private\blueprintcompilationmanager.cpp:202] UE4Editor_UnrealEd!FKismetEditorUtilities::CreateBlueprint() [d:\build\++ue4\sync\engine\source\editor\unrealed\private\kismet2\kismet2.cpp:516] UE4Editor_UnrealEd!UBlueprintFactory::FactoryCreateNew() [d:\build\++ue4\sync\engine\source\editor\unrealed\private\factories\editorfactories.cpp:5999] UE4Editor_AssetTools!UAssetToolsImpl::CreateAsset() [d:\build\++ue4\sync\engine\source\developer\assettools\private\assettools.cpp:472] UE4Editor_ContentBrowser!SAssetView::CreateAssetFromTemporary() [d:\build\++ue4\sync\engine\source\editor\contentbrowser\private\sassetview.cpp:3736] UE4Editor_ContentBrowser!SAssetView::AssetRenameCommit() [d:\build\++ue4\sync\engine\source\editor\contentbrowser\private\sassetview.cpp:4199] UE4Editor_ContentBrowser!TBaseSPMethodDelegateInstance<0,SAssetView,0,void __cdecl(TSharedPtr<FAssetViewItem,0> const & __ptr64,FString const & __ptr64,FSlateRect const & __ptr64,enum ETextCommit::Type)>::ExecuteIfSafe() [d:\build\++ue4\sync\engine\source\runtime\core\public\delegates\delegateinstancesimpl.h:355] UE4Editor_ContentBrowser!SAssetViewItem::HandleNameCommitted() [d:\build\++ue4\sync\engine\source\editor\contentbrowser\private\assetviewwidgets.cpp:559] UE4Editor_ContentBrowser!TBaseSPMethodDelegateInstance<0,SAssetTileItem,0,void __cdecl(FText const & __ptr64,enum ETextCommit::Type)>::ExecuteIfSafe() [d:\build\++ue4\sync\engine\source\runtime\core\public\delegates\delegateinstancesimpl.h:355] UE4Editor_Slate!SInlineEditableTextBlock::OnTextBoxCommitted() [d:\build\++ue4\sync\engine\source\runtime\slate\private\widgets\text\sinlineeditabletextblock.cpp:312] UE4Editor_Slate!TBaseSPMethodDelegateInstance<0,SInlineEditableTextBlock,0,void __cdecl(FText const & __ptr64,enum ETextCommit::Type)>::ExecuteIfSafe() [d:\build\++ue4\sync\engine\source\runtime\core\public\delegates\delegateinstancesimpl.h:355] UE4Editor_Slate!FSlateEditableTextLayout::HandleFocusLost() [d:\build\++ue4\sync\engine\source\runtime\slate\private\widgets\text\slateeditabletextlayout.cpp:788] UE4Editor_Slate!FSlateApplication::SetUserFocus() [d:\build\++ue4\sync\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:2940] UE4Editor_Slate!FSlateApplication::RoutePointerDownEvent() [d:\build\++ue4\sync\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:5474] UE4Editor_Slate!FSlateApplication::ProcessMouseButtonDownEvent() [d:\build\++ue4\sync\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:5377] UE4Editor_Slate!FSlateApplication::OnMouseDown() [d:\build\++ue4\sync\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:5295] UE4Editor_ApplicationCore!FWindowsApplication::ProcessDeferredMessage() [d:\build\++ue4\sync\engine\source\runtime\applicationcore\private\windows\windowsapplication.cpp:1807] UE4Editor_ApplicationCore!FWindowsApplication::DeferMessage() [d:\build\++ue4\sync\engine\source\runtime\applicationcore\private\windows\windowsapplication.cpp:2249] UE4Editor_ApplicationCore!FWindowsApplication::ProcessMessage() [d:\build\++ue4\sync\engine\source\runtime\applicationcore\private\windows\windowsapplication.cpp:897] UE4Editor_ApplicationCore!FWindowsApplication::AppWndProc() [d:\build\++ue4\sync\engine\source\runtime\applicationcore\private\windows\windowsapplication.cpp:734] user32 user32 UE4Editor_ApplicationCore!FWindowsPlatformApplicationMisc::PumpMessages() [d:\build\++ue4\sync\engine\source\runtime\applicationcore\private\windows\windowsplatformapplicationmisc.cpp:130] UE4Editor!FEngineLoop::Tick() [d:\build\++ue4\sync\engine\source\runtime\launch\private\launchengineloop.cpp:3610] UE4Editor!GuardedMain() [d:\build\++ue4\sync\engine\source\runtime\launch\private\launch.cpp:174] UE4Editor!GuardedMainWrapper() [d:\build\++ue4\sync\engine\source\runtime\launch\private\windows\launchwindows.cpp:145] UE4Editor!WinMain() [d:\build\++ue4\sync\engine\source\runtime\launch\private\windows\launchwindows.cpp:276] UE4Editor!__scrt_common_main_seh() [f:\dd\vctools\crt\vcstartup\src\startup\exe_common.inl:283] kernel32 ntdll
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