Hi Nico,

re:
> Why can't i export my mesh only in quad poygons? Is there a basic explanation about that?

MoI's exporter just doesn't work that way currently, it's designed to generate polygons that follow the UV structure of the NURBS surfaces. You will get quads on an untrimmed surface but where there are areas where the surface has been trimmed those quads will also get trimmed and become n-gons.

In the future I would like to work on a quads only export but it will need a much different type of meshing algorithm and that requires a lot of work to make. So I don't know when that might happen.

- Michael