Some meshes just refuse to work in the cloth room as far as selecting constraint groups etcetera. I don't know why that is either.

Example. I wanted to create a natural Bulge Morph for a figure by exporting out their ALTHIP.OBJ and reimporting it to shrink wrap it in the cloth room over the same figure with the genitals turned on and the cloth room refused letting me select any points for constraints on the mesh to keep it from falling down around the figures feet. That's just one example, but I've run into other geometry in the past that wouldn't allow me to select points for the different groups as well. This wasn't just a Poser 8 think either.