Freeship export to Michlet has problems if the boat has "deep motorwell" I'm not sure what the exact term is, but see the pic;
I looked at your picture and I don't think this is a bug, per se. The file generator is reading offsets from the centreline to the first hullside it sees at each station, which at the stern is the inside of your motor well. Your hull is a monohull at the bow and is essentially a catamaran at the stern- Michlet would not be able to read that hull, and the file generator tells you this by showing you how Michlet would read it if you were to continue.
Thanks for reply. I guess there's no way to calculate resistances with Michlet for such hull type.