Developer Notes

Duplicate of UE-40155

Description

The editor crashes when the blueprints folder is moved into another folder in the sources panel

This crash is similar to UE-34388 But have different callstacks.

This is a Regression from 4.14.2

Steps to Reproduce
  1. Open QAGame
  2. Open the Sources Panel
  3. Click and Drag Blueprints folder into another folder
  4. Select Move

Result: The editor crashes

Expected Result: The Blueprints folder is moved into the selected folder

Callstack
UE4Editor_CoreUObject!CastLogError() casts.cpp:11 
UE4Editor_UnrealEd!CastChecked<UBlueprint,UObject>() casts.h:211 
UE4Editor_UnrealEd!FBlueprintEditorUtils::FindFunctionInImplementedInterfaces() blueprinteditorutils.cpp:2314 
UE4Editor_KismetCompiler!FKismetCompilerContext::PrecompileFunction() kismetcompiler.cpp:1526 
UE4Editor_KismetCompiler!FKismetCompilerContext::Compile() kismetcompiler.cpp:3677 
UE4Editor_KismetCompiler!FKismet2CompilerModule::CompileBlueprintInner() kismetcompilermodule.cpp:130 
UE4Editor_KismetCompiler!FKismet2CompilerModule::CompileBlueprint() kismetcompilermodule.cpp:230 
UE4Editor_UnrealEd!FKismetEditorUtilities::GenerateBlueprintSkeleton() kismet2.cpp:964 
UE4Editor_UnrealEd!FBlueprintEditorUtils::RegenerateBlueprintClass() blueprinteditorutils.cpp:1370 
UE4Editor_CoreUObject!FLinkerLoad::RegenerateBlueprintClass() blueprintsupport.cpp:395 
UE4Editor_CoreUObject!FLinkerLoad::FinalizeBlueprint() blueprintsupport.cpp:1368 
UE4Editor_CoreUObject!FLinkerLoad::Preload() linkerload.cpp:3466 
UE4Editor_CoreUObject!FLinkerLoad::CreateExport() linkerload.cpp:4131 
UE4Editor_CoreUObject!FLinkerLoad::IndexToObject() linkerload.cpp:4353 
UE4Editor_CoreUObject!FLinkerLoad::CreateExport() linkerload.cpp:3827 
UE4Editor_CoreUObject!FLinkerLoad::CreateExportAndPreload() linkerload.cpp:2885 
UE4Editor_CoreUObject!FLinkerLoad::LoadAllObjects() linkerload.cpp:3024 
UE4Editor_CoreUObject!LoadPackageInternalInner() uobjectglobals.cpp:1311 
UE4Editor_CoreUObject!LoadPackage() uobjectglobals.cpp:1477 
UE4Editor_CoreUObject!ResolveName() uobjectglobals.cpp:756 
UE4Editor_CoreUObject!StaticLoadObjectInternal() uobjectglobals.cpp:843 
UE4Editor_CoreUObject!StaticLoadObject() uobjectglobals.cpp:903 
UE4Editor_ContentBrowser!ContentBrowserUtils::LoadAssetsIfNeeded() contentbrowserutils.cpp:376 
UE4Editor_ContentBrowser!ContentBrowserUtils::PrepareFoldersForDragDrop() contentbrowserutils.cpp:913 
UE4Editor_ContentBrowser!ContentBrowserUtils::MoveFolders() contentbrowserutils.cpp:831 
UE4Editor_ContentBrowser!SPathView::ExecuteTreeDropMoveFolder() spathview.cpp:1369 
UE4Editor_ContentBrowser!TBaseSPMethodDelegateInstance<0,SPathView,0,TTypeWrapper<void> __cdecl() delegateinstancesimpl.h:327 
UE4Editor_ContentBrowser!TBaseSPMethodDelegateInstance<0,SPathView,0,void __cdecl() delegateinstancesimpl.h:434 
UE4Editor_ContentBrowser!TBaseDelegate<void,TArray<FString,FDefaultAllocator>,FString>::ExecuteIfBound() delegatesignatureimpl.inl:624 
UE4Editor_ContentBrowser!<lambda_cf6809d53f504d698d5a069fee362fcb>::operator() dragdrophandler.cpp:201 
UE4Editor_ContentBrowser!TBaseFunctorDelegateInstance<void __cdecl() delegateinstancesimpl.h:1199 
UE4Editor_Slate!SMenuEntryBlock::OnClicked() smenuentryblock.cpp:1050 
UE4Editor_Slate!SMenuEntryBlock::OnMenuItemButtonClicked() smenuentryblock.cpp:1001 
UE4Editor_Slate!TMemberFunctionCaller<SMenuEntryBlock,FReply() delegateinstanceinterface.h:165 
UE4Editor_Slate!TTupleImpl<TIntegerSequence<unsigned int> >::ApplyAfter<TMemberFunctionCaller<SMenuEntryBlock,FReply() tuple.h:134 
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:278 
UE4Editor_Slate!SMenuEntryButton::OnMouseButtonUp() smenuentryblock.cpp:399 
UE4Editor_Slate!<lambda_8d0e9a1da76abd0a756a3a9d775f5ed1>::operator() slateapplication.cpp:5057 
UE4Editor_Slate!FEventRouter::Route<FReply,FEventRouter::FToLeafmostPolicy,FPointerEvent,<lambda_8d0e9a1da76abd0a756a3a9d775f5ed1> >() slateapplication.cpp:238 
UE4Editor_Slate!FSlateApplication::RoutePointerUpEvent() slateapplication.cpp:5046 
UE4Editor_Slate!FSlateApplication::ProcessMouseButtonUpEvent() slateapplication.cpp:5509 
UE4Editor_Slate!FSlateApplication::OnMouseUp() slateapplication.cpp:5486 
UE4Editor_Core!FWindowsApplication::ProcessDeferredMessage() windowsapplication.cpp:1698 
UE4Editor_Core!FWindowsApplication::DeferMessage() windowsapplication.cpp:2120 
UE4Editor_Core!FWindowsApplication::ProcessMessage() windowsapplication.cpp:867 
UE4Editor_Core!FWindowsApplication::AppWndProc() windowsapplication.cpp:714 
user32!<Unknown> 
user32!<Unknown> 
UE4Editor_Core!FWindowsPlatformMisc::PumpMessages() windowsplatformmisc.cpp:979 
UE4Editor!FEngineLoop::Tick() launchengineloop.cpp:2971 
UE4Editor!GuardedMain() launch.cpp:166 
UE4Editor!GuardedMainWrapper() launchwindows.cpp:130 
UE4Editor!WinMain() launchwindows.cpp:206 
UE4Editor!__scrt_common_main_seh() exe_common.inl:264 
kernel32!<Unknown> 
ntdll!<Unknown> 

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Duplicate
ComponentTools
Affects Versions4.15
Release Commit3246894
CreatedJan 4, 2017
ResolvedJan 4, 2017
UpdatedApr 27, 2018
View Jira Issue