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[4.8p3] Crash on lighting build

Hey there, I currently have an issue with the 4.8 preview 3 engine build. Whenever I try to build lighting for my project it will export lighting data up till 34% then immediately crash. There have been no other hiccups with this build though. Any advice will be greatly appreciated, cheers :)


Crash report data:

Unknown exception - code 00000001 (first/second chance not available)

"Assertion failed: (Index >= 0) & (Index < ArrayNum) [File:D:\BuildFarm\buildmachine_++depot+UE4-Releases+4.8\Engine\Source\Runtime\Core\Public\Containers\Array.h] [Line: 678] Array index out of

KERNELBASE UE4Editor_Core!FOutputDeviceWindowsError::Serialize() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\runtime\core\private\windows\windowsplatformoutputdevices.cpp:95] UE4Editor_Core!FOutputDevice::Logf_VA() [d:\buildfarm\buildmachine++depot+ue4-releases+4.8\engine\source\runtime\core\private\misc\outputdevice.cpp:144] UE4Editor_Core!FDebug::AssertFailed() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\runtime\core\private\misc\outputdevice.cpp:360] UE4Editor_UnrealEd!GetLandscapeOpacityData() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\editor\unrealed\private\lightmass\lightmasslandscaperender.cpp:269] UE4Editor_UnrealEd!FLightmassMaterialRenderer::GenerateMaterialPropertyData() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\editor\unrealed\private\lightmass\lightmassrender.cpp:984] UE4Editor_UnrealEd!FLightmassMaterialRenderer::GenerateMaterialData() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\editor\unrealed\private\lightmass\lightmassrender.cpp:894] UE4Editor_UnrealEd!FLightmassExporter::ExportMaterial() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\editor\unrealed\private\lightmass\lightmass.cpp:1206] UE4Editor_UnrealEd!FLightmassExporter::WriteToMaterialChannel() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\editor\unrealed\private\lightmass\lightmass.cpp:680] UE4Editor_UnrealEd!FLightmassProcessor::ExecuteAmortizedMaterialExport() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\editor\unrealed\private\lightmass\lightmass.cpp:2423] UE4Editor_UnrealEd!FStaticLightingSystem::UpdateLightingBuild() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\editor\unrealed\private\staticlightingsystem\staticlightingsystem.cpp:1996] UE4Editor_UnrealEd!UEditorEngine::UpdateBuildLighting() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\editor\unrealed\private\staticlightingsystem\staticlightingsystem.cpp:2153] UE4Editor_UnrealEd!UUnrealEdEngine::Tick() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\editor\unrealed\private\unrealedengine.cpp:407] UE4Editor!FEngineLoop::Tick() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\runtime\launch\private\launchengineloop.cpp:2355] UE4Editor!GuardedMain() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\runtime\launch\private\launch.cpp:142] UE4Editor!GuardedMainWrapper() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\runtime\launch\private\windows\launchwindows.cpp:126] UE4Editor!WinMain() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\runtime\launch\private\windows\launchwindows.cpp:200]

Product Version: UE 4.8 Preview
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asked May 24 '15 at 09:21 AM in Bug Reports

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Marced for Life
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avatar image Amaresh May 25 '15 at 08:59 AM

I'm facing a similar problem. Have you found any solution yet?

avatar image Marced for Life May 25 '15 at 10:47 AM

Not yet, however it seems to only occur with large worlds. Even in a blank projects.

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Hi Marced for Life -

Thank you for the report. This appears to be a known crash whose fix did not make it into the Preview 3 release. We've tested the fix internally and it should be integrated into the next 4.8 release.

Eric Ketchum

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answered May 26 '15 at 01:46 PM

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Lovecraft_K ♦♦ STAFF
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avatar image Marced for Life May 27 '15 at 04:18 AM

Oh awesome, thanks for the info! :)

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