Description

This does not reproduce in 4.18.2

I spoke with Tim G. from the tools team and we tried a few things.

1st

  1. Opened LV_Soul_Slum in 4.18
  2. Exported the landscape height map
  3. Opened a level in 4.19 and imported the height map

RESULT: No Crash

 

2nd

  1. Open 4.19 Soul City project
  2. Open the landscape material and disconnect all pins
  3. Compile/Save material
  4. Open LV_Soul_City

RESULT: Still crashes with the same callstack

Steps to Reproduce
  1. Create a new blank project in 4.19
  2. Open the Epic Games Launcher and open the "Marketplace" tab
  3. Search for "Soul City" and download the pack
  4. After you have the Soul City pack, Add to Project and select your blank level
  5. Open the map LV_Soul_Slum

RESULT: Crash

Callstack

LoginId:8ccbeed547ec243eba642da7a4adc494
EpicAccountId:d30da8af7d174d43ae74e173b0e9f8d2

Access violation - code c0000005 (first/second chance not available)

UE4Editor_Landscape!FLandscapeComponentSceneProxy::GetStaticBatchElementVisibility() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\landscape\private\landscaperender.cpp:1542]
UE4Editor_Renderer!FRelevancePacket::MarkRelevant() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\renderer\private\scenevisibility.cpp:1832]
UE4Editor_Renderer!ParallelFor() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\core\public\async\parallelfor.h:174]
UE4Editor_Renderer!ComputeAndMarkRelevanceForViewParallel() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\renderer\private\scenevisibility.cpp:1958]
UE4Editor_Renderer!FSceneRenderer::ComputeViewVisibility() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\renderer\private\scenevisibility.cpp:2808]
UE4Editor_Renderer!FDeferredShadingSceneRenderer::InitViews() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\renderer\private\scenevisibility.cpp:3067]
UE4Editor_Renderer!FDeferredShadingSceneRenderer::Render() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\renderer\private\deferredshadingrenderer.cpp:593]
UE4Editor_Renderer!RenderViewFamily_RenderThread() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\renderer\private\scenerendering.cpp:2749]
UE4Editor_Renderer!TGraphTask<`FRendererModule::BeginRenderingViewFamily'::`33'::EURCMacro_FDrawSceneCommand>::ExecuteTask() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\core\public\async\taskgraphinterfaces.h:829]
UE4Editor_Core!FNamedTaskThread::ProcessTasksNamedThread() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\core\private\async\taskgraph.cpp:665]
UE4Editor_Core!FNamedTaskThread::ProcessTasksUntilQuit() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\core\private\async\taskgraph.cpp:574]
UE4Editor_RenderCore!RenderingThreadMain() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\rendercore\private\renderingthread.cpp:331]
UE4Editor_RenderCore!FRenderingThread::Run() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\rendercore\private\renderingthread.cpp:465]
UE4Editor_Core!FRunnableThreadWin::Run() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\core\private\windows\windowsrunnablethread.cpp:76]

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Fixed
ComponentTools - Landscape
Affects Versions4.194.19.1
Target Fix4.19.14.20
Fix Commit3954609
CreatedMar 15, 2018
ResolvedMar 20, 2018
UpdatedApr 27, 2018