Hello,
Thank you for reaching out, for this issue please try the 5.1.1 Datasmith Exporter Plugin for Rhino available at the following page, as it will be compatible with Twinmotion 2023.1 and Rhino 6 & 7: Datasmith Exporter for Rhino
Please be sure to uninstall any previous versions of the Rhino Datasmith or Direct Link plugins before installing the 5.1.1 plugin. We'll have more information on installing/uninstalling the Datasmith plugin here:
Installing the Datasmith Plugin for Rhino on Windows
Best Regards,
Morgan