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Lighting build failed

Hello! I wanted to build the lighting on one of my projects but an error appeared out of nowhere which says "Lighting build failed". I searched through ue's froum but I didn't find anything similar to what I have after reading the swarm's log. I deleted the lightmassvolumes , all the reflections, all the lights and the starter folder. Then I add a new lightmassvolume and only one directional light. The swarm log shows a lot of this: 9:36:56 PM: [PingCoordinator] Coordinator ping failed 9:36:59 PM: [PingRemoteHost] Failed to ping RENDER-01 with RENDER-01 9:36:59 PM: [PingRemoteHost] Exception details: An exception occurred during a Ping request. 9:36:59 PM: [PingCoordinator] Determined that we couldn't ping the coordinator

9:29:11 PM: LogLightmass:Display: Lightmass Win64 started on: BUBBLES-PC. Command-line: B5F5E8274DF532E20DFA4C9D67A4E9E5 9:29:11 PM: Lightmass Win64 started on: BUBBLES-PC. Command-line: B5F5E8274DF532E20DFA4C9D67A4E9E5 9:29:11 PM: LogLightmass:Display: Processing scene GUID: B5F5E8274DF532E20DFA4C9D67A4E9E5 with 10 threads 9:29:11 PM: Processing scene GUID: B5F5E8274DF532E20DFA4C9D67A4E9E5 with 10 threads 9:29:11 PM: Building static lighting... 9:29:11 PM: LogGenericPlatformMisc:Warning: Failed to determine engine directory: Defaulting to ../../../Engine/ 9:29:11 PM: Failed to determine engine directory: Defaulting to ../../../Engine/ 9:29:11 PM: [Job] Found a parent connection for PID 12296 9:29:11 PM: [Job] 2696C875 -> 46797523 9:29:11 PM: [Interface:TryOpenConnection] Local connection established 9:29:11 PM: Step 1 of N for message: (2696C875 -> 46797523), TIMING, Message Count 1 (Agent) 9:29:11 PM: LogUnrealMath:Error: FMatrix::InverseFast(), trying to invert a NIL matrix, this results in NaNs! Use Inverse() instead. 9:29:11 PM: FMatrix::InverseFast(), trying to invert a NIL matrix, this results in NaNs! Use Inverse() instead. 9:29:11 PM: LogOutputDevice:Warning: === Handled error: === 9:29:11 PM: 9:29:11 PM: 9:29:11 PM: 9:29:11 PM: Ensure condition failed: false [File:d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\core\public\math\UnrealMatrix.h] [Line: 266] 9:29:11 PM: 9:29:11 PM: FMatrix::InverseFast(), trying to invert a NIL matrix, this results in NaNs! Use Inverse() instead. 9:29:11 PM: 9:29:11 PM: Stack: 9:29:11 PM: 9:29:11 PM: UnrealLightmass-Core.dll 9:29:11 PM: 9:29:11 PM: UnrealLightmass-Core.dll 9:29:11 PM: 9:29:11 PM: UnrealLightmass-Core.dll 9:29:11 PM: 9:29:11 PM: UnrealLightmass.exe 9:29:11 PM: 9:29:11 PM: UnrealLightmass.exe 9:29:11 PM: 9:29:11 PM: UnrealLightmass.exe 9:29:11 PM: 9:29:11 PM: UnrealLightmass.exe 9:29:11 PM: 9:29:11 PM: UnrealLightmass.exe 9:29:11 PM: 9:29:11 PM: UnrealLightmass.exe 9:29:11 PM: 9:29:11 PM: UnrealLightmass.exe 9:29:11 PM: 9:29:11 PM: UnrealLightmass.exe 9:29:11 PM: 9:29:11 PM: UnrealLightmass.exe 9:29:11 PM: 9:29:11 PM: KERNEL32.DLL 9:29:11 PM: 9:29:11 PM: ntdll.dll 9:29:11 PM: 9:29:11 PM: ntdll.dll 9:29:11 PM: 9:29:11 PM: 9:29:11 PM: === Handled error: === 9:29:11 PM: 9:29:11 PM: 9:29:11 PM: 9:29:11 PM: Ensure condition failed: false [File:d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\core\public\math\UnrealMatrix.h] [Line: 266] 9:29:11 PM: 9:29:11 PM: FMatrix::InverseFast(), trying to invert a NIL matrix, this results in NaNs! Use Inverse() instead. 9:29:11 PM: 9:29:11 PM: Stack: 9:29:11 PM: 9:29:11 PM: UnrealLightmass-Core.dll 9:29:11 PM: 9:29:11 PM: UnrealLightmass-Core.dll 9:29:11 PM: 9:29:11 PM: UnrealLightmass-Core.dll 9:29:11 PM: 9:29:11 PM: UnrealLightmass.exe 9:29:11 PM: 9:29:11 PM: UnrealLightmass.exe 9:29:11 PM: 9:29:11 PM: UnrealLightmass.exe 9:29:11 PM: 9:29:11 PM: UnrealLightmass.exe 9:29:11 PM: 9:29:11 PM: UnrealLightmass.exe 9:29:11 PM: 9:29:11 PM: UnrealLightmass.exe 9:29:11 PM: 9:29:11 PM: UnrealLightmass.exe 9:29:11 PM: 9:29:11 PM: UnrealLightmass.exe 9:29:11 PM: 9:29:11 PM: UnrealLightmass.exe 9:29:11 PM: 9:29:11 PM: KERNEL32.DLL 9:29:11 PM: 9:29:11 PM: ntdll.dll 9:29:11 PM: 9:29:11 PM: ntdll.dll 9:29:11 PM: 9:29:11 PM: 9:29:11 PM: LogWindows:Error: Windows GetLastError: The operation completed successfully. (0) 9:29:11 PM: Windows GetLastError: The operation completed successfully. (0) 9:29:11 PM: [PingCoordinator] Determined that we couldn't ping the coordinator 9:29:11 PM: [PingCoordinator] CoordinatorResponding is false 9:29:11 PM: [MaintainConnections] Maintaining Connection (46797523) 9:29:11 PM: [MaintainConnections] Local connection alive (46797523) 9:29:11 PM: [MaintainConnections] Maintaining Connection (2696C875) 9:29:11 PM: [MaintainConnections] Local connection alive (2696C875) 9:29:11 PM: [Maintain Jobs] Job "UnrealLightmass_2016-02-27_01-03-06_1333704-64bit.exe" has been running for 0.4384953 seconds 9:29:11 PM: [Job] Job has failed! Job executable didn't exit cleanly. Exit code: -1073741819 9:29:12 PM: [CloseConnection] Closing orphaned Job (B5F5E827-4DF532E2-0DFA4C9D-67A4E9E5) 9:29:16 PM: [PostJobStatsToDB] Database error: 9:29:16 PM: [PostJobStatsToDB] A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server)

Product Version: UE 4.10
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asked Apr 25 '16 at 08:23 PM in Using UE4

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DayDead
6 5 6

avatar image weberl May 18 '16 at 07:56 PM
avatar image DayDead May 19 '16 at 08:12 PM

Unfortunatelly I couldn't. But what I did is exporting the level art in another empty level.

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