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Can't build lighting on Mac - pc works fine

We're having a problem building lighting. This only happens on a Mac machine - not on PC. We're using a very slightly modified version of the 4.6.1 engine. The firewall is not enabled, and static lighting is enabled.

When I click "build", it says "building lighting: 0%" and then a box comes up saying that building lighting failed. There's not a lot in the log window to go on - see below. Any suggestions would be appreciated!

Logs:

LogRHI:Warning: OpenGL debug output extension not supported!

MapCheck: New page: Map Check

LogRHI:Warning: OpenGL debug output extension not supported!

LightingResults: New page: Lighting Build - Feb 5, 2015, 2:41:50 AM

LogStaticLightingSystem:Warning: No importance volume found, so the scene bounding box was used. You can optimize your scene's quality and lighting build times by adding importance volumes.

LogStaticLightingSystem: Running Lightmass w/ ImmediateImport mode ENABLED

LogStaticLightingSystem: Running Lightmass w/ ImmediateProcess mode ENABLED

LogStaticLightingSystem: Running Lightmass w/ Sorting mode ENABLED

LogStaticLightingSystem: Running Lightmass w/ Mapping paddings ENABLED

LogStaticLightingSystem: Running Lightmass w/ Mapping debug paddings DISABLED

LogRHI:Warning: OpenGL debug output extension not supported!

LogEditorBuildUtils: Build time 0:00:00

LogMaterial: Missing cached shader map for material FLightmassMaterialRenderer M_wwBody, compiling.

LogMaterial: Missing cached shader map for material FLightmassMaterialRenderer M_wwBody, compiling.

LogMaterial: Missing cached shader map for material FLightmassMaterialRenderer M_wwHead, compiling.

LogMaterial: Missing cached shader map for material FLightmassMaterialRenderer M_wwHead, compiling.

Product Version: Not Selected
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asked Feb 05 '15 at 07:56 PM in Everything Else

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jcoombs
91 5 8 12

avatar image AndrewHurley Feb 05 '15 at 10:33 PM

Hello jcoombs,

Sorry to hear you are experiencing this issue. Would you mind providing me with your system specs/information?

When you say slightly modified version of the engine 4.6.1, I am assuming you have added your own code?

Have you attempted your Lightmass build without this code addition?

Thank you,

Andrew Hurley

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Hi Andrew,

it turns out this was a result of a mismatched debug/development editor & unreallightmass. I rebuilt unreallightmass so that it was the same configuration as the editor and things worked fine.

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answered Feb 07 '15 at 09:59 PM

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jcoombs
91 5 8 12

avatar image Footman Feb 07 '15 at 07:48 PM

Disable Firewall, DNSCrypt and other programs that can modify network. Worked for me.

avatar image sincitycyclops Oct 22 '15 at 03:55 AM

can someone explain how to do this to me? I have the same problem, which is a different problem than I had BEFORE today's update. See previous problem here: https://answers.unrealengine.com/questions/315999/lighting-wont-build-ut-map-editor-argh.html

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