I made a fresh 4.18 build and project, added a Lightmass Importance Volume to it and hit build.
Lightmass crashes with this swarm agent log:
13:15:05: [Interface:TryOpenConnection] Local connection established
13:15:05: [Job] Accepted Job 8B62E2C7-42C6E44A-1B43EF8B-BE75C957
13:15:06: [Job] Launched Job UnrealLightmass_2017-10-17_08-52-36_1411072-64bit.exe
13:15:06: [Job] PID is 6456
13:15:06: [Job] GUID is "8B62E2C7-42C6E44A-1B43EF8B-BE75C957"
13:15:06: LogLightmass: Display: Lightmass Win64 started on: . Command-line: 8B62E2C742C6E44A1B43EF8BBE75C957
13:15:06: Failed to determine engine directory: Defaulting to ../../../Engine/
13:15:06: Failed to load 'aqProf.dll' (GetLastError=126)
13:15:06: File 'aqProf.dll' does not exist
13:15:06: Failed to load 'VtuneApi.dll' (GetLastError=126)
13:15:06: File 'VtuneApi.dll' does not exist
13:15:06: Failed to load 'VtuneApi32e.dll' (GetLastError=126)
13:15:06: File 'VtuneApi32e.dll' does not exist
13:15:06: Lightmass Win64 started on: . Command-line: 8B62E2C742C6E44A1B43EF8BBE75C957
13:15:06: LogLightmass: Display: Processing scene GUID: 8B62E2C742C6E44A1B43EF8BBE75C957 with 6 threads
13:15:06: Processing scene GUID: 8B62E2C742C6E44A1B43EF8BBE75C957 with 6 threads
13:15:06: Building static lighting...
13:15:06: [OpenConnection] Registering TCP channel ...
13:15:06: [OpenConnection] Connecting to agent ...
13:15:07: [TryOpenConnection] Testing the Agent
13:15:07: [TryOpenConnection] Opening Connection to Agent
13:15:07: [TryOpenConnection] Local Process ID is 6456
13:15:07: [Job] Found a parent connection for PID 6456
13:15:07: [Job] 79CBF430 -> 1D35FA68
13:15:07: [Interface:TryOpenConnection] Local connection established
13:15:07: LogMemory: Warning: MemoryStats:
13:15:07: AvailablePhysical 8905236480
13:15:07: AvailableVirtual 140736694157312
13:15:07: UsedPhysical 38146048
13:15:07: PeakUsedPhysical 39337984
13:15:07: UsedVirtual 196657152
13:15:07: PeakUsedVirtual 196657152
13:15:07: MemoryStats:
13:15:07: AvailablePhysical 8905236480
13:15:07: AvailableVirtual 140736694157312
13:15:07: UsedPhysical 38146048
13:15:07: PeakUsedPhysical 39337984
13:15:07: UsedVirtual 196657152
13:15:07: PeakUsedVirtual 196657152
13:15:07: Allocator Stats for TBB: (not implemented)
13:15:07: Windows GetLastError: The operation completed successfully. (0)
13:15:07: Exception handled in main, crash report generated, re-throwing exception
13:15:07: Exception handled in main, calling appHandleCriticalError
13:15:07: LogLightmass: Error: === Critical error: ===
13:15:07:
13:15:07: Fatal error: [File:C:\Users\\Documents\Git\UnrealEngine\Engine\Source\Runtime\Core\Private\GenericPlatform\GenericPlatformMemory.cpp] [Line: 183]
13:15:07: Ran out of memory allocating 18446744070209521004 bytes with alignment 0
13:15:07:
13:15:07:
13:15:07:
13:15:07:
13:15:07: 0x00000000AD1E9E08 KERNELBASE.dll!UnknownFunction []
13:15:07:
13:15:07: 0x000000008F398A04 UnrealLightmass-ApplicationCore.dll!UnknownFunction []
13:15:07:
13:15:07: 0x0000000060880D1B UnrealLightmass-Core.dll!UnknownFunction []
13:15:07:
13:15:07: 0x00000000608243F8 UnrealLightmass-Core.dll!UnknownFunction []
13:15:07:
13:15:07: 0x00000000606FE2F5 UnrealLightmass-Core.dll!UnknownFunction []
13:15:07:
13:15:07: 0x0000000060730E02 UnrealLightmass-Core.dll!UnknownFunction []
13:15:07:
13:15:07: 0x00000000102AEDE4 UnrealLightmass.exe!TArray<wchar_t,FDefaultAllocator>::ResizeTo() [c:\users\\documents\git\unrealengine\engine\source\runtime\core\public\containers\array.h:2265]
13:15:07:
13:15:07: 0x00000000102C20D8 UnrealLightmass.exe!Lightmass::FScene::Import() [c:\users\\documents\git\unrealengine\engine\source\programs\unreallightmass\private\importexport\lightmassscene.cpp:109]
13:15:07:
13:15:07: 0x00000000102B4153 UnrealLightmass.exe!Lightmass::FLightmassImporter::ImportScene() [c:\users\\documents\git\unrealengine\engine\source\programs\unreallightmass\private\importexport\importer.cpp:34]
13:15:07:
13:15:07: 0x00000000102ADAF1 UnrealLightmass.exe!Lightmass::BuildStaticLighting() [c:\users\\documents\git\unrealengine\engine\source\programs\unreallightmass\private\cpusolver\cpusolver.cpp:179]
13:15:07:
13:15:07: 0x00000000102DCA8D UnrealLightmass.exe!Lightmass::LightmassMain() [c:\users\\documents\git\unrealengine\engine\source\programs\unreallightmass\private\launch\unreallightmass.cpp:239]
13:15:07:
13:15:07: 0x00000000102DFF0A UnrealLightmass.exe!main() [c:\users\\documents\git\unrealengine\engine\source\programs\unreallightmass\private\launch\unreallightmass.cpp:508]
13:15:07:
13:15:07: 0x0000000010391059 UnrealLightmass.exe!__scrt_common_main_seh() [f:\dd\vctools\crt\vcstartup\src\startup\exe_common.inl:283]
13:15:07:
13:15:07: 0x00000000ADF72774 KERNEL32.DLL!UnknownFunction []
13:15:07:
13:15:07: 0x00000000B0050D61 ntdll.dll!UnknownFunction []
13:15:07:
13:15:07: 0x00000000B0050D61 ntdll.dll!UnknownFunction []
13:15:07:
13:15:07:
13:15:07: === Critical error: ===
13:15:07:
13:15:07: Fatal error: [File:C:\Users\\Documents\Git\UnrealEngine\Engine\Source\Runtime\Core\Private\GenericPlatform\GenericPlatformMemory.cpp] [Line: 183]
13:15:07: Ran out of memory allocating 18446744070209521004 bytes with alignment 0
13:15:07:
13:15:07:
13:15:07:
13:15:07:
13:15:07: 0x00000000AD1E9E08 KERNELBASE.dll!UnknownFunction []
13:15:07:
13:15:07: 0x000000008F398A04 UnrealLightmass-ApplicationCore.dll!UnknownFunction []
13:15:07:
13:15:07: 0x0000000060880D1B UnrealLightmass-Core.dll!UnknownFunction []
13:15:07:
13:15:07: 0x00000000608243F8 UnrealLightmass-Core.dll!UnknownFunction []
13:15:07:
13:15:07: 0x00000000606FE2F5 UnrealLightmass-Core.dll!UnknownFunction []
13:15:07:
13:15:07: 0x0000000060730E02 UnrealLightmass-Core.dll!UnknownFunction []
13:15:07:
13:15:07: 0x00000000102AEDE4 UnrealLightmass.exe!TArray<wchar_t,FDefaultAllocator>::ResizeTo() [c:\users\\documents\git\unrealengine\engine\source\runtime\core\public\containers\array.h:2265]
13:15:07:
13:15:07: 0x00000000102C20D8 UnrealLightmass.exe!Lightmass::FScene::Import() [c:\users\\documents\git\unrealengine\engine\source\programs\unreallightmass\private\importexport\lightmassscene.cpp:109]
13:15:07:
13:15:07: 0x00000000102B4153 UnrealLightmass.exe!Lightmass::FLightmassImporter::ImportScene() [c:\users\\documents\git\unrealengine\engine\source\programs\unreallightmass\private\importexport\importer.cpp:34]
13:15:07:
13:15:07: 0x00000000102ADAF1 UnrealLightmass.exe!Lightmass::BuildStaticLighting() [c:\users\\documents\git\unrealengine\engine\source\programs\unreallightmass\private\cpusolver\cpusolver.cpp:179]
13:15:07:
13:15:07: 0x00000000102DCA8D UnrealLightmass.exe!Lightmass::LightmassMain() [c:\users\\documents\git\unrealengine\engine\source\programs\unreallightmass\private\launch\unreallightmass.cpp:239]
13:15:07:
13:15:07: 0x00000000102DFF0A UnrealLightmass.exe!main() [c:\users\\documents\git\unrealengine\engine\source\programs\unreallightmass\private\launch\unreallightmass.cpp:508]
13:15:07:
13:15:07: 0x0000000010391059 UnrealLightmass.exe!__scrt_common_main_seh() [f:\dd\vctools\crt\vcstartup\src\startup\exe_common.inl:283]
13:15:07:
13:15:07: 0x00000000ADF72774 KERNEL32.DLL!UnknownFunction []
13:15:07:
13:15:07: 0x00000000B0050D61 ntdll.dll!UnknownFunction []
13:15:07:
13:15:07: 0x00000000B0050D61 ntdll.dll!UnknownFunction []
13:15:07:
13:15:07:
13:15:07: LogWindows: Warning: CreateProc failed: The system cannot find the file specified. (0x00000002)
13:15:07: CreateProc failed: The system cannot find the file specified. (0x00000002)
13:15:07: LogWindows: Warning: URL: ../DotNET/AutoReporter.exe 6456 "UE4AutoReportDump.txt" "UnrealLight_XC0DEB10C_1E9020C842338142F2FD739F6E1F0E2C.log" "UE4AutoReportIniDump.txt" "" -unattended
13:15:07: URL: ../DotNET/AutoReporter.exe 6456 "UE4AutoReportDump.txt" "UnrealLight_XC0DEB10C_1E9020C842338142F2FD739F6E1F0E2C.log" "UE4AutoReportIniDump.txt" "" -unattended
13:15:07: LogLightmass: Error: Couldn't start up the Auto Reporting process!
13:15:07: Couldn't start up the Auto Reporting process!
13:15:07: *** CRITICAL ERROR! Machine:
13:15:07: *** CRITICAL ERROR! Logfile: UnrealLight_XC0DEB10C_1E9020C842338142F2FD739F6E1F0E2C.log
13:15:07: *** CRITICAL ERROR! Crash report:
13:15:07: [CloseConnection] Closing connection 1D35FA68 using handle 1D35FA68
13:15:07: [CloseConnection] Connection confirmed for disconnection 1D35FA68
13:15:07: [CloseConnection] Connection disconnected 1D35FA68
13:15:07: [GetMessage] Safely returning to 1D35FA68 with no message
13:15:07: [MaintainConnections] Local connection has closed (1D35FA68)
13:15:07: [MaintainConnections] Removed connection 1D35FA68
13:15:08: [Job] Job has failed! Job executable didn't exit cleanly. Exit code: 1
13:15:08: [CloseConnection] Closing connection 79CBF430 using handle 79CBF430
13:15:08: [CloseConnection] Connection confirmed for disconnection 79CBF430
13:15:08: [CloseConnection] Closing orphaned Job (8B62E2C7-42C6E44A-1B43EF8B-BE75C957)
13:15:08: [MaintainConnections] Connection 79CBF430 is DISCONNECTING
13:15:08: [MaintainConnections] Connection 79CBF430 is DISCONNECTING
13:15:09: [MaintainConnections] Connection 79CBF430 is DISCONNECTING
13:15:09: [MaintainConnections] Connection 79CBF430 is DISCONNECTING
13:15:10: [MaintainConnections] Connection 79CBF430 is DISCONNECTING
13:15:10: [MaintainConnections] Connection 79CBF430 is DISCONNECTING
13:15:11: [MaintainConnections] Connection 79CBF430 is DISCONNECTING
13:15:11: [MaintainConnections] Connection 79CBF430 is DISCONNECTING
13:15:12: [MaintainConnections] Connection 79CBF430 is DISCONNECTING
13:15:12: [CloseConnection] Connection disconnected 79CBF430
13:15:12: [GetMessage] Safely returning to 79CBF430 with no message
13:15:12: [MaintainConnections] Local connection has closed (79CBF430)
13:15:12: [MaintainConnections] Removed connection 79CBF430
13:15:12: [MaintainConnections] All connections have closed
Its trying to allocate 18446744070209521004 bytes, thats 18446744 terabytes, that cant be right…
Any ideas?