:) That's great, thank you for the hints. Anything works like expected now, the workflow makes fun.

Sorry, something was wrong with my new beta install path and so the sphere mesh issue was, because the old beta was opened. I fix my install error and anything is fine now. :)

A question for further improvements of the Rhino2MoI meshing. Do you see a chance to keep the Rhino layers so that the imported meshes are back to the original layers? If I remember me right I read that you plan to name the mesh material names by style names? I don't know so much about Rhino scripting, but could it be possible per Rhino script, that the reimported meshes are saved to layers with the material name?
Best would be, if the Rhino material and layers could be keeped during MoI meshing. I know, that's not your job, but maybe you have an idea. ;)