As I slap my hand to my forehead, I've solved my particular problem and it was a mistake on my part that I forgot till I went backwards a few steps to try to figure out what went wrong. I reloaded the catsuit, rendered it and found the same problem--and it hadn't been a problem before. When I looked at the transmap, I realized that I made a change to the map, resaved it, but forgot to delete the template layer that I was using as a guide. I wound up saving a transmap that had a slightly opaque template on it and that's what was causing me all the trouble. That doesn't solve randym77's problem, but mine's now fixed and I can get back to pulling together the rest of the image and not keep spinning my wheels.

My visual indexes of Poser content are at http://www.sharecg.com/pf/rgagnon