UE Editor: LoadErrors BuildingMaster : Failed import for Property (Town04)

[Daraan]

I am using

• Platform/OS: Ubuntu 22.04
• CARLA version: 0.9.15 dev, branch of d6049290b335e71f8b3130ffa0b90bf0cc1f6686, but also the latest dev version (May24) https://github.com/carla-simulator/carla/commit/9037124f594daa09f745f00d7125a513cac8aaaf on a new installation
• Map: Town04_Opt - other maps like Town10 are fine, but I have only minimally tested other maps.

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Problem you have experienced: When building Carla and loading Town04_Opt I always get three errors in the pip-op UE Message log:

LoadErrors: Error: /Game/Carla/Blueprints/LevelDesign/BuildingMaster  : Failed import for BoolProperty, ObjectProperty, StructProperty

Full Error Output

[2024.02.28-17.03.02:787][  0]LogStreaming: Display: ULevelStreaming::RequestLevel(/Game/Carla/Maps/Sublevels/Town04_Opt/T04_Buildings) is flushing async loading
# ------------ Errors:
[2024.02.28-17.03.03:090][  0]LoadErrors: Error: /Game/Carla/Blueprints/LevelDesign/BuildingMaster  : Failed import for BoolProperty /Game/Carla/Blueprints/LevelDesign/BuildingSpawnableItems.BuildingSpawnableItems:BlockSpawn_12_4FEC57D947F4B49EA11F31A19F18EB48 Referenced by export Function /Game/Carla/Blueprints/LevelDesign/BuildingMaster.BuildingMaster_C:PlaceItems
[2024.02.28-17.03.03:090][  0]LoadErrors: Error: /Game/Carla/Blueprints/LevelDesign/BuildingMaster  : Failed import for ObjectProperty /Game/Carla/Blueprints/LevelDesign/BuildingSpawnableItems.BuildingSpawnableItems:Item_16_6D77EDC54B56B5883D9DC7809D6C704A Referenced by export Function /Game/Carla/Blueprints/LevelDesign/BuildingMaster.BuildingMaster_C:PlaceItems
[2024.02.28-17.03.03:090][  0]LoadErrors: Error: /Game/Carla/Blueprints/LevelDesign/BuildingMaster  : Failed import for StructProperty /Game/Carla/Blueprints/LevelDesign/BuildingSpawnableItems.BuildingSpawnableItems:Transform_5_626174554EFC313F198DA2AED94C7F1B Referenced by export Function /Game/Carla/Blueprints/LevelDesign/BuildingMaster.BuildingMaster_C:PlaceItems
# ------------ 
[2024.02.28-17.03.03:102][  0]Warning:  applied to a non-external Texture2D sampler. This may work by chance on some platforms but is not portable. Please change sampler type to 'External'. Parameter 'EmissiveMap' (slot 1) in material 'M_BuildingMaterial'
[2024.02.28-17.03.03:102][  0]LogStreaming: Display: ULevelStreaming::RequestLevel(/Game/Carla/Maps/Sublevels/Town04_Opt/T04_Rendering_and_Lighting_components) is flushing async loading

Other information (documentation you consulted, workarounds you tried):

I tried to download the dev-assets, removed them again, checking out the normal 0.9.15 tag, always at least using make clean, and did a complete new build setup in a new folder, nothing fixed this error.

Especially as checking out a tag where I did not have the error before forwarding to a dev version could imply that it is related to some ignored files?