Unreal Engine Issues

UE-38810

Crash Generating Proxy Mesh with Transition Screen Size set to 1

Crash Generating Proxy Mesh with Transition Screen Size set to 1

Description

Crash occurs when attempting to Generate Proxy Meshes with Transition Screen Size set to 1.

Steps to Reproduce
  1. Open QAGame in editor.
  2. Open the level TM-HLOD_NotBuilt.
  3. Open the HLOD Outliner.
  4. Click the plus sign for HLOD Setup.
  5. Under Mesh Generation Settings, set Transition Screen Size to 1.
  6. Click Generate Clusters.
  7. Click Generate Proxy Meshes.

RESULT:

Crash.

Callstack
UE4Editor_Engine!FKAggregateGeom::~FKAggregateGeom() 
UE4Editor_MeshUtilities!TArray<FRawMeshExt,FDefaultAllocator>::~TArray<FRawMeshExt,FDefaultAllocator>() array.h:553 
UE4Editor_MeshUtilities!FMeshUtilities::MergeStaticMeshComponents() meshutilities.cpp:8151 
UE4Editor_HierarchicalLODUtilities!FHierarchicalLODUtilities::BuildStaticMeshForLODActor() hierarchicallodutilities.cpp:208 
UE4Editor_UnrealEd!FHierarchicalLODBuilder::BuildMeshesForLODActors() hierarchicallod.cpp:504 
UE4Editor_HierarchicalLODOutliner!HLODOutliner::SHLODOutliner::HandleBuildLODActors() hlodoutliner.cpp:450 
UE4Editor_HierarchicalLODOutliner!TMemberFunctionCaller<HLODOutliner::SHLODOutliner,FReply() delegateinstanceinterface.h:161 
UE4Editor_HierarchicalLODOutliner!TTupleImpl<TIntegerSequence<unsigned int> >::ApplyAfter<TMemberFunctionCaller<HLODOutliner::SHLODOutliner,FReply() tuple.h:116
UE4Editor_HierarchicalLODOutliner!TBaseSPMethodDelegateInstance<0,HLODOutliner::SHLODOutliner,0,FReply __cdecl() delegateinstancesimpl.h:318 
UE4Editor_Slate!TBaseDelegate<FReply>::Execute() delegatesignatureimpl.inl:522 
UE4Editor_Slate!SButton::OnMouseButtonUp() sbutton.cpp:275 
UE4Editor_Slate!<lambda_8d0e9a1da76abd0a756a3a9d775f5ed1>::operator() slateapplication.cpp:5010 
UE4Editor_Slate!FEventRouter::Route<FReply,FEventRouter::FToLeafmostPolicy,FPointerEvent,<lambda_8d0e9a1da76abd0a756a3a9d775f5ed1> >() slateapplication.cpp:215
UE4Editor_Slate!FSlateApplication::RoutePointerUpEvent() slateapplication.cpp:4999 
UE4Editor_Slate!FSlateApplication::ProcessMouseButtonUpEvent() slateapplication.cpp:5462 
UE4Editor_Slate!FSlateApplication::OnMouseUp() slateapplication.cpp:5439 
UE4Editor_Core!FWindowsApplication::ProcessDeferredMessage() windowsapplication.cpp:1690 
UE4Editor_Core!FWindowsApplication::DeferMessage() windowsapplication.cpp:2109 
UE4Editor_Core!FWindowsApplication::ProcessMessage() windowsapplication.cpp:859 
UE4Editor_Core!FWindowsApplication::AppWndProc() windowsapplication.cpp:706 
user32!<Unknown> 
user32!<Unknown> 
UE4Editor_Core!FWindowsPlatformMisc::PumpMessages() windowsplatformmisc.cpp:951 
UE4Editor!FEngineLoop::Tick() launchengineloop.cpp:2806 
UE4Editor!GuardedMain() launch.cpp:152 
UE4Editor!GuardedMainWrapper() launchwindows.cpp:126 
UE4Editor!WinMain() launchwindows.cpp:202 
UE4Editor!__scrt_common_main_seh() exe_common.inl:264 
kernel32!<Unknown> 
ntdll!<Unknown>

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Fixed
ComponentUE - World Creation - Worldbuilding Tools - HLOD
Affects Versions4.15
Target Fix4.15
Fix Commit3210358
Main Commit3227721
CreatedNov 18, 2016
ResolvedNov 25, 2016
UpdatedApr 27, 2018
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