Description

A crash occurs when starting either the Landscape Painting Mode or Landscape Sculpting Mode tutorials. It crashes even if a landscape is already in the level.

This is similar to [Link Removed], however the specific repro steps in that have been verified fixed, while this crash still occurs

Steps to Reproduce
  1. open the editor to any project
  2. click the graduation cap icon in the upper right to open the Tutorials window
  3. click on Landscape > Landscape Walkthroughs
  4. click on either Landscape Painting Mode or Landscape Sculpting Mode

Result: crash

Callstack
Assertion failed: ContainerPtr [File:D:\Build\++UE4+Release-4.16+Compile\Sync\Engine\Source\Runtime\CoreUObject\Public\UObject/UnrealType.h] [Line: 324]

UE4Editor_CoreUObject!UObject::execLetValueOnPersistentFrame() scriptcore.cpp:1788 
UE4Editor_CoreUObject!UObject::ProcessInternal() scriptcore.cpp:943 
UE4Editor_CoreUObject!UFunction::Invoke() class.cpp:4461 
UE4Editor_CoreUObject!UObject::ProcessEvent() scriptcore.cpp:1313 
UE4Editor_IntroTutorials!UEditorTutorial::OnTutorialStageStarted() 
UE4Editor_IntroTutorials!STutorialRoot::LaunchTutorial() stutorialroot.cpp:182 
UE4Editor_IntroTutorials!FIntroTutorials::LaunchTutorial() introtutorials.cpp:459 
UE4Editor_IntroTutorials!TBaseRawMethodDelegateInstance<0,FIntroTutorials,TTypeWrapper<void> __cdecl() delegateinstancesimpl.h:556 
UE4Editor_IntroTutorials!TBaseRawMethodDelegateInstance<0,FIntroTutorials,void __cdecl() delegateinstancesimpl.h:646 
UE4Editor_IntroTutorials!TBaseDelegate<void,UEditorTutorial * __ptr64,enum IIntroTutorials::ETutorialStartType,TWeakPtr<SWindow,0>,TBaseDelegate<void>,TB delegatesignatureimpl.inl:624 
UE4Editor_IntroTutorials!STutorialsBrowser::OnTutorialSelected() stutorialsbrowser.cpp:887 
UE4Editor_IntroTutorials!TBaseSPMethodDelegateInstance<0,STutorialsBrowser,0,TTypeWrapper<void> __cdecl() delegateinstancesimpl.h:327 
UE4Editor_IntroTutorials!TBaseSPMethodDelegateInstance<0,STutorialsBrowser,0,void __cdecl() delegateinstancesimpl.h:434 
UE4Editor_IntroTutorials!FTutorialListEntry_Tutorial::OnClicked() stutorialsbrowser.cpp:450 
UE4Editor_IntroTutorials!TMemberFunctionCaller<FTutorialListEntry_Tutorial,FReply() delegateinstanceinterface.h:165 
UE4Editor_IntroTutorials!UE4Tuple_Private::TTupleImpl<TIntegerSequence<unsigned int,0>,bool>::ApplyAfter<TMemberFunctionCaller<FTutorialListEntry_Tutoria tuple.h:422 
UE4Editor_IntroTutorials!TBaseSPMethodDelegateInstance<1,FTutorialListEntry_Tutorial const ,0,FReply __cdecl() delegateinstancesimpl.h:327 
UE4Editor_Slate!TBaseDelegate<FReply>::Execute() delegatesignatureimpl.inl:537 
UE4Editor_Slate!SButton::OnMouseButtonUp() sbutton.cpp:278 
UE4Editor_Slate!<lambda_8d0e9a1da76abd0a756a3a9d775f5ed1>::operator() slateapplication.cpp:5049 
UE4Editor_Slate!FEventRouter::Route<FReply,FEventRouter::FToLeafmostPolicy,FPointerEvent,<lambda_8d0e9a1da76abd0a756a3a9d775f5ed1> >() slateapplication.cpp:239 
UE4Editor_Slate!FSlateApplication::RoutePointerUpEvent() slateapplication.cpp:5038 
UE4Editor_Slate!FSlateApplication::ProcessMouseButtonUpEvent() slateapplication.cpp:5515 
UE4Editor_Slate!FSlateApplication::OnMouseUp() slateapplication.cpp:5495 
UE4Editor_Core!FWindowsApplication::ProcessDeferredMessage() windowsapplication.cpp:1704 
UE4Editor_Core!FWindowsApplication::DeferMessage() windowsapplication.cpp:2127 
UE4Editor_Core!FWindowsApplication::ProcessMessage() windowsapplication.cpp:867 
UE4Editor_Core!FWindowsApplication::AppWndProc() windowsapplication.cpp:714 
user32!UserCallWinProcCheckWow() 
user32!DispatchMessageWorker() 
UE4Editor_Core!FWindowsPlatformMisc::PumpMessages() windowsplatformmisc.cpp:1009 
UE4Editor!FEngineLoop::Tick() launchengineloop.cpp:3058 
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() 

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Fixed
ComponentTools
Affects Versions4.164.16.1
Target Fix4.16.24.17
Fix Commit3498870
Main Commit3499771
CreatedJun 6, 2017
ResolvedJun 19, 2017
UpdatedApr 27, 2018
View Jira Issue