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
Result: crash
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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There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-45734 in the post.