further looking into the logs:
[2024.12.23-22.44.32:515][856]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.
[2024.12.23-22.44.32:515][856]LogStaticLightingSystem: Running Lightmass w/ ImmediateImport mode ENABLED
[2024.12.23-22.44.32:515][856]LogStaticLightingSystem: Running Lightmass w/ ImmediateProcess mode ENABLED
[2024.12.23-22.44.32:515][856]LogStaticLightingSystem: Running Lightmass w/ Sorting mode ENABLED
[2024.12.23-22.44.32:515][856]LogStaticLightingSystem: Running Lightmass w/ Mapping paddings ENABLED
[2024.12.23-22.44.32:515][856]LogStaticLightingSystem: Running Lightmass w/ Mapping debug paddings DISABLED
[2024.12.23-22.44.32:533][856]LogEditorBuildUtils: Build time 0:00
[2024.12.23-22.44.32:623][858]LogUObjectHash: Compacting FUObjectHashTables data took 0.40ms
Failed to find game directory: /home/blackbeard/unreal/UnrealLightmass/Binaries
Assertion failed: Tag == ETaskTag::EGameThread [File:./Runtime/Core/Private/HAL/ThreadingBase.cpp] [Line: 88]
The Gamethread can only be tagged on the inital thread of the application
appError called: Assertion failed: Tag == ETaskTag::EGameThread [File:./Runtime/Core/Private/HAL/ThreadingBase.cpp] [Line: 88]
The Gamethread can only be tagged on the inital thread of the application
Signal 11 caught.
Malloc Size=262146 LargeMemoryPoolOffset=262162
Malloc Size=262146 LargeMemoryPoolOffset=524338
=== Lightmass crashed (Signal=11): ===
1001[2024.12.23-22.44.32:855][862]LightingResults: Error: Import Volumetric Lightmap failed: Expected 64 tasks, only 0 were reported as completed from Swarm
[2024.12.23-22.44.33:108][862]LogUObjectHash: Compacting FUObjectHashTables data took 0.23ms
[2024.12.23-22.44.33:143][862]LogStaticLightingSystem: Illumination: 575.677 ms (6 us encoding lightmaps, 6 us encoding shadowmaps)
[2024.12.23-22.44.33:143][862]LogStaticLightingSystem: Lightmap texture memory: 0.0 MB (0.0 MB streaming, 0.0 MB non-streaming), 0 textures
[2024.12.23-22.44.33:143][862]LogStaticLightingSystem: Shadowmap texture memory: 0.0 MB (0.0 MB streaming, 0.0 MB non-streaming), 0 textures
[2024.12.23-22.44.33:143][862]DumpUnbuiltLightIteractions
[2024.12.23-22.44.33:143][862]Lights with unbuilt interactions: 0
[2024.12.23-22.44.33:143][862]
[2024.12.23-22.44.33:143][862]Primitives with unbuilt interactions: 0
[2024.12.23-22.44.33:175][862]Cmd: MAP CHECK NOTIFYRESULTS
[2024.12.23-22.44.33:175][862]MapCheck: Map check complete: 0 Error(s), 0 Warning(s), took 0.118ms to complete.
[2024.12.23-22.44.34:587][934]LogSlate: Window 'Message Log' being destroyed
[2024.12.23-22.44.34:628][934]LogSlate: Window 'Message Log' being destroyed
this is the 5.5.1 from https://www.unrealengine.com/en-US/linux
When i switch back to 5.4.4 i no longer get the crash or the Failed to find game directory: /home/blackbeard/unreal/UnrealLightmass/Binaries
Looks like the Assertion around the gamethread is causing the UnrealLightmass crash