Hi Specktech

> So it seems like the subD coming from Rhino won't load as soon as its converted to version 5.

Before you do the export are you selecting the version that was converted with the ToNURBS command?

What you described could happen if you had the SubD object selected when you did the v5 export.

Can you please post the .3dm files (v7 and saved as v5 versions) that you were describing here or e-mail them to me at moi@moi3d.com so I can take a look?

Thanks, - Michael