I recently made a couple of pictures in P5 using the FireFly render engine and am having the same problem in both. In the one I have posted, the left sleeve is not "in the couch" but rather not showing up. I also made a leather duster texture/transparency map for the V3 morphing long dress but the inside of the back would not show up when rendered. I have unchecked the don't show backwards polygons box. Is there anything else I can do?