Steps to Reproduce

HLOD generation level (HLOD_TEST_EDIT.umap) of CheckMap "HLOD_TEST_CLASH.umap" in "HLOD_TEST.umap" is prepared because a new cluster can not be created (HLOD can not be created) if it is in a game level hierarchy Then, create HLOD.

After creating HLOD, create additional cluster in "HLOD_TEST_EDIT.umap", open "HLOD_TEST_CLASH.umap" and crash when launching hierarchical outliner.

Callstack

Assertion failed: (LODActor->LODLevel - 1) < LevelNodes.Num() [Link Removed] [Line: 1583] LODActor (LODActor_1) found with LODLevel (1) that is out of current WorldSettings range (1)

UE4Editor_Core!FDebug::AssertFailed() [c:\github\unrealengine\engine\source\runtime\core\private\misc\assertionmacros.cpp:414]
UE4Editor_HierarchicalLODOutliner!HLODOutliner::SHLODOutliner::Populate() [c:\github\unrealengine\engine\source\editor\hierarchicallodoutliner\private\hlodoutliner.cpp:1583]
UE4Editor_HierarchicalLODOutliner!HLODOutliner::SHLODOutliner::Tick() [c:\github\unrealengine\engine\source\editor\hierarchicallodoutliner\private\hlodoutliner.cpp:350]
UE4Editor_SlateCore!SWidget::Paint() [c:\github\unrealengine\engine\source\runtime\slatecore\private\widgets\swidget.cpp:873]
UE4Editor_SlateCore!SCompoundWidget::OnPaint() [c:\github\unrealengine\engine\source\runtime\slatecore\private\widgets\scompoundwidget.cpp:35]
UE4Editor_Slate!SBorder::OnPaint() [c:\github\unrealengine\engine\source\runtime\slate\private\widgets\layout\sborder.cpp:85]
UE4Editor_SlateCore!SWidget::Paint() [c:\github\unrealengine\engine\source\runtime\slatecore\private\widgets\swidget.cpp:899]
UE4Editor_SlateCore!SCompoundWidget::OnPaint() [c:\github\unrealengine\engine\source\runtime\slatecore\private\widgets\scompoundwidget.cpp:35]
UE4Editor_Slate!SBorder::OnPaint() [c:\github\unrealengine\engine\source\runtime\slate\private\widgets\layout\sborder.cpp:85]
UE4Editor_SlateCore!SWidget::Paint() [c:\github\unrealengine\engine\source\runtime\slatecore\private\widgets\swidget.cpp:899]
UE4Editor_SlateCore!SOverlay::OnPaint() [c:\github\unrealengine\engine\source\runtime\slatecore\private\widgets\soverlay.cpp:97]
UE4Editor_SlateCore!SWidget::Paint() [c:\github\unrealengine\engine\source\runtime\slatecore\private\widgets\swidget.cpp:899]
UE4Editor_SlateCore!SPanel::PaintArrangedChildren() [c:\github\unrealengine\engine\source\runtime\slatecore\private\widgets\spanel.cpp:31]
UE4Editor_SlateCore!SPanel::OnPaint() [c:\github\unrealengine\engine\source\runtime\slatecore\private\widgets\spanel.cpp:12]
UE4Editor_SlateCore!SWidget::Paint() [c:\github\unrealengine\engine\source\runtime\slatecore\private\widgets\swidget.cpp:899]
UE4Editor_SlateCore!SCompoundWidget::OnPaint() [c:\github\unrealengine\engine\source\runtime\slatecore\private\widgets\scompoundwidget.cpp:35]
UE4Editor_SlateCore!SWidget::Paint() [c:\github\unrealengine\engine\source\runtime\slatecore\private\widgets\swidget.cpp:899]
UE4Editor_SlateCore!SPanel::PaintArrangedChildren() [c:\github\unrealengine\engine\source\runtime\slatecore\private\widgets\spanel.cpp:31]
UE4Editor_Slate!SSplitter::OnPaint() [c:\github\unrealengine\engine\source\runtime\slate\private\widgets\layout\ssplitter.cpp:167]
UE4Editor_SlateCore!SWidget::Paint() [c:\github\unrealengine\engine\source\runtime\slatecore\private\widgets\swidget.cpp:899]
UE4Editor_SlateCore!SCompoundWidget::OnPaint() [c:\github\unrealengine\engine\source\runtime\slatecore\private\widgets\scompoundwidget.cpp:35]
UE4Editor_SlateCore!SWidget::Paint() [c:\github\unrealengine\engine\source\runtime\slatecore\private\widgets\swidget.cpp:899]
UE4Editor_SlateCore!SPanel::PaintArrangedChildren() [c:\github\unrealengine\engine\source\runtime\slatecore\private\widgets\spanel.cpp:31]
UE4Editor_Slate!SSplitter::OnPaint() [c:\github\unrealengine\engine\source\runtime\slate\private\widgets\layout\ssplitter.cpp:167]
UE4Editor_SlateCore!SWidget::Paint() [c:\github\unrealengine\engine\source\runtime\slatecore\private\widgets\swidget.cpp:899]
UE4Editor_SlateCore!SCompoundWidget::OnPaint() [c:\github\unrealengine\engine\source\runtime\slatecore\private\widgets\scompoundwidget.cpp:35]
UE4Editor_SlateCore!SWidget::Paint() [c:\github\unrealengine\engine\source\runtime\slatecore\private\widgets\swidget.cpp:899]
UE4Editor_SlateCore!SPanel::PaintArrangedChildren() [c:\github\unrealengine\engine\source\runtime\slatecore\private\widgets\spanel.cpp:31]
UE4Editor_Slate!SSplitter::OnPaint() [c:\github\unrealengine\engine\source\runtime\slate\private\widgets\layout\ssplitter.cpp:167]
UE4Editor_SlateCore!SWidget::Paint() [c:\github\unrealengine\engine\source\runtime\slatecore\private\widgets\swidget.cpp:899]
UE4Editor_SlateCore!SOverlay::OnPaint() [c:\github\unrealengine\engine\source\runtime\slatecore\private\widgets\soverlay.cpp:97]
UE4Editor_SlateCore!SWidget::Paint() [c:\github\unrealengine\engine\source\runtime\slatecore\private\widgets\swidget.cpp:899]
UE4Editor_SlateCore!SCompoundWidget::OnPaint() [c:\github\unrealengine\engine\source\runtime\slatecore\private\widgets\scompoundwidget.cpp:35]
UE4Editor_SlateCore!SWidget::Paint() [c:\github\unrealengine\engine\source\runtime\slatecore\private\widgets\swidget.cpp:899]
UE4Editor_SlateCore!SPanel::PaintArrangedChildren() [c:\github\unrealengine\engine\source\runtime\slatecore\private\widgets\spanel.cpp:31]
UE4Editor_SlateCore!SPanel::OnPaint() [c:\github\unrealengine\engine\source\runtime\slatecore\private\widgets\spanel.cpp:12]
UE4Editor_SlateCore!SWidget::Paint() [c:\github\unrealengine\engine\source\runtime\slatecore\private\widgets\swidget.cpp:899]
UE4Editor_SlateCore!SCompoundWidget::OnPaint() [c:\github\unrealengine\engine\source\runtime\slatecore\private\widgets\scompoundwidget.cpp:35]
UE4Editor_SlateCore!SWidget::Paint() [c:\github\unrealengine\engine\source\runtime\slatecore\private\widgets\swidget.cpp:899]
UE4Editor_SlateCore!SCompoundWidget::OnPaint() [c:\github\unrealengine\engine\source\runtime\slatecore\private\widgets\scompoundwidget.cpp:35]
UE4Editor_Slate!SBorder::OnPaint() [c:\github\unrealengine\engine\source\runtime\slate\private\widgets\layout\sborder.cpp:85]
UE4Editor_SlateCore!SWidget::Paint() [c:\github\unrealengine\engine\source\runtime\slatecore\private\widgets\swidget.cpp:899]
UE4Editor_SlateCore!SOverlay::OnPaint() [c:\github\unrealengine\engine\source\runtime\slatecore\private\widgets\soverlay.cpp:97]
UE4Editor_SlateCore!SWidget::Paint() [c:\github\unrealengine\engine\source\runtime\slatecore\private\widgets\swidget.cpp:899]
UE4Editor_SlateCore!SPanel::PaintArrangedChildren() [c:\github\unrealengine\engine\source\runtime\slatecore\private\widgets\spanel.cpp:31]
UE4Editor_SlateCore!SPanel::OnPaint() [c:\github\unrealengine\engine\source\runtime\slatecore\private\widgets\spanel.cpp:12]
UE4Editor_SlateCore!SWidget::Paint() [c:\github\unrealengine\engine\source\runtime\slatecore\private\widgets\swidget.cpp:899]
UE4Editor_SlateCore!SCompoundWidget::OnPaint() [c:\github\unrealengine\engine\source\runtime\slatecore\private\widgets\scompoundwidget.cpp:35]
UE4Editor_SlateCore!SWidget::Paint() [c:\github\unrealengine\engine\source\runtime\slatecore\private\widgets\swidget.cpp:899]
UE4Editor_SlateCore!SPanel::PaintArrangedChildren() [c:\github\unrealengine\engine\source\runtime\slatecore\private\widgets\spanel.cpp:31]
UE4Editor_Slate!SSplitter::OnPaint() [c:\github\unrealengine\engine\source\runtime\slate\private\widgets\layout\ssplitter.cpp:167]
UE4Editor_SlateCore!SWidget::Paint() [c:\github\unrealengine\engine\source\runtime\slatecore\private\widgets\swidget.cpp:899]
UE4Editor_SlateCore!SOverlay::OnPaint() [c:\github\unrealengine\engine\source\runtime\slatecore\private\widgets\soverlay.cpp:97]
UE4Editor_SlateCore!SWidget::Paint() [c:\github\unrealengine\engine\source\runtime\slatecore\private\widgets\swidget.cpp:899]
UE4Editor_SlateCore!SCompoundWidget::OnPaint() [c:\github\unrealengine\engine\source\runtime\slatecore\private\widgets\scompoundwidget.cpp:35]
UE4Editor_SlateCore!SWidget::Paint() [c:\github\unrealengine\engine\source\runtime\slatecore\private\widgets\swidget.cpp:899]
UE4Editor_SlateCore!SPanel::PaintArrangedChildren() [c:\github\unrealengine\engine\source\runtime\slatecore\private\widgets\spanel.cpp:31]
UE4Editor_SlateCore!SPanel::OnPaint() [c:\github\unrealengine\engine\source\runtime\slatecore\private\widgets\spanel.cpp:12]
UE4Editor_SlateCore!SWidget::Paint() [c:\github\unrealengine\engine\source\runtime\slatecore\private\widgets\swidget.cpp:899]
UE4Editor_SlateCore!SPanel::PaintArrangedChildren() [c:\github\unrealengine\engine\source\runtime\slatecore\private\widgets\spanel.cpp:31]
UE4Editor_SlateCore!SPanel::OnPaint() [c:\github\unrealengine\engine\source\runtime\slatecore\private\widgets\spanel.cpp:12]
UE4Editor_SlateCore!SWidget::Paint() [c:\github\unrealengine\engine\source\runtime\slatecore\private\widgets\swidget.cpp:899]
UE4Editor_SlateCore!SOverlay::OnPaint() [c:\github\unrealengine\engine\source\runtime\slatecore\private\widgets\soverlay.cpp:97]
UE4Editor_SlateCore!SWidget::Paint() [c:\github\unrealengine\engine\source\runtime\slatecore\private\widgets\swidget.cpp:899]
UE4Editor_SlateCore!SCompoundWidget::OnPaint() [c:\github\unrealengine\engine\source\runtime\slatecore\private\widgets\scompoundwidget.cpp:35]
UE4Editor_SlateCore!SWindow::OnPaint() [c:\github\unrealengine\engine\source\runtime\slatecore\private\widgets\swindow.cpp:1892]
UE4Editor_SlateCore!SWidget::Paint() [c:\github\unrealengine\engine\source\runtime\slatecore\private\widgets\swidget.cpp:899]
UE4Editor_Slate!FSlateApplication::DrawWindowAndChildren() [c:\github\unrealengine\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:1233]
UE4Editor_Slate!FSlateApplication::PrivateDrawWindows() [c:\github\unrealengine\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:1473]
UE4Editor_Slate!FSlateApplication::DrawWindows() [c:\github\unrealengine\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:1190]
UE4Editor_Slate!FSlateApplication::TickApplication() [c:\github\unrealengine\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:1777]
UE4Editor_Slate!FSlateApplication::Tick() [c:\github\unrealengine\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:1595]
UE4Editor!FEngineLoop::Tick() [c:\github\unrealengine\engine\source\runtime\launch\private\launchengineloop.cpp:3378]
UE4Editor!GuardedMain() [c:\github\unrealengine\engine\source\runtime\launch\private\launch.cpp:166]
UE4Editor!GuardedMainWrapper() [c:\github\unrealengine\engine\source\runtime\launch\private\windows\launchwindows.cpp:134]
UE4Editor!WinMain() [c:\github\unrealengine\engine\source\runtime\launch\private\windows\launchwindows.cpp:210]
UE4Editor!__scrt_common_main_seh() [f:\dd\vctools\crt\vcstartup\src\startup\exe_common.inl:253]
kernel32
ntdll

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Fixed
ComponentTools - HLOD
Affects Versions4.18.3
Target Fix4.19
Fix Commit3920134
Main Commit3990065
Release Commit3920134
CreatedFeb 28, 2018
ResolvedMar 2, 2018
UpdatedApr 27, 2018