In UVMapper use the Tools/Weld vertices function. If that was the error you should receive a notice saying that so many vertices are now welded. Re-save your OBJ and try the Poser figure again. Also check your grouping. It wouldn't be the first time I have mixed up my rights and lefts and labeled the right collar lCollar. The results are similar to what you see.

To cure the shading select your lights and turn up the map size to 1000.