Most colors disappear after turning path tracing on

Hi, I am new to Twinmotion and attached is my first test project.

If you check the project with Path tracing off you will see the colors/materials as intended but the moment I turn on path tracing most of the colors disappear. Am I missing anything?

Test.tm (57.8 MB)

Hello ,

Thank you for posting in the community and I was also able to reproduce the issue on my end. It seems like the elements in question were imported with Collapse Method: Collapse All and was wondering if you can try in a new file using Collapse by Material or Keep Hierarchy to see if it has the same behavior.

Screenshot 2022-10-06 150910Also please try to explode the grouped elements in Sketchup and import it into a new file as another test. Looking forward to hearing back from you.

Kind regards,

Vincent B.