Hi Andrei, it seems that 3D Coat is just sensitive to triangles I suppose, maybe it's become more specialized to only work with sub-d quad topology or something like that.

The triangle that I circled in the above image is not particularly skinny, if it can't handle triangles like that it probably isn't going to work directly with MoI's output and I guess you'd need to do some retopology work in that case.

I'm not entirely sure if I understand the thread 100% - did the first problem image that you posted just suddenly stop happening or something like that?

- Michael