Hello there,
I'd like to make sure that you're using the latest version of Datasmith for Rhino (5.0.3), found here:
- https://www.twinmotion.com/en-US/plugins/rhino
If you continue to experience issues, please submit a bug report here with this screenshot and any other logs so we can investigate this further:
- https://twinmotionhelp.epicgames.com/s/case-community-page
Thank you,