My guesses would be 1) Reversed polys - UVmapper can cure those 2 and 4) I'll almost bet these are at seams between body parts. And that the buttons/band is a separate mesh from the jacket proper, but with some vertices from the jacket and band in the same place. Poser welds body parts together, and so, unfortunately, welds identical points from otherwise separate meshes , even on the same body parts, if they are at the edges between body parts. Sometimes it happens even when the identical vertices are NOT EVEN on a body part edge. Either way, resizing/moving usually helps. See pic above - before resizing the pockets on the left, and after resizing on the right. The smoothing in Poser makes this look like nasty dents in the mesh, even when you can't see any in a modeler. Try resizing or moving the band ever so slightly to make sure the jacket and band have no identical vertices. 3) Shadow map - try setting the shadow map size to 1024. Have fun.