Hi Michael - a couple of tips when exporting to 3D Coat:

I don't think that 3D Coat (or ZBrush either) likes to handle N-gon polygons, so when you export, set Output: Quads & Triangles instead of Output: N-gons.

Also both 3D Coat and ZBrush don't really like to have large sized polygons that span a lot of area. So you generally want to use the "Divide larger than" option in MoI's export options to divide up any polygons larger than a certain distance to prevent any large polygons in the result.

See here for an example:
http://moi3d.com/forum/index.php?webtag=MOI&msg=1549.4


Those options can help make things work better in the detailing application.


- Michael