Hi Michael,

Nothing special about it just a filleted cube from Rhino v5. I don't have the one from the screenshot so I created another one for you to check out. It only happens with the rolling ball option. I think is may be related to a newer nurbs format from Rhino?? If I export from Rhino in a lower version and open it in MOI it seems fine. Maybe it is something you can't correct until the Rhino 5 file format is released?

-Shane