Hey, im doing the "Basic Human form" now, to get a good basics foundation. And ive now com to the part where i need to convert my model from Polygons and into Subdivisions. The problem is - When I try to do so, I get an error message saying:

" Nonmanifold geometry cannot be converted into a subidivion Surface " Now as I don't speak the language of English, and also I have just started using maya - I can't figure out what this means.

Id really appriciate some advice on basically what it means, and how to solve it.

Thanks in advance.

Delerious