Ok, I've just downloaded Maya persornal learning editon some days ago. And I wanted to make a Rhino So far I've gotten. BUT when Im trying to convert the polygon to a subdiv the script editor says "Nonmanifold geometry cannot be converted to a subdivision surface" I figured out where the Nonmanifold geometry could be, using the `Cleanup tool´instead of cleaning up I just choosed the "Select Nonmanifold geometry". And here they are... What shall I do now? Btw: May I upload pictures of Maya, When Im using Maya Persornal learning editon?