I've converted a file from probably catia, successfully. It actually came in as a solid part file, but a few faces on the part are transparent, and stay transparent while the rest is solid looking. I've sectioned the part view with no problem, and made a drawing out of it, with a successful section view, with hatch lines and everything, but the transparent faces wont behave. I've saved it as parasolid, and converted with no change. I've made a block around it, subtracted the part body from the block body(making a cavity mold if you will), then made a second block body around that and subtracted the cavitized block body from the new fresh block body, and end up with the exact same original looking part with transparent faces still there. Any ideas will be helpful (short of the VAR's standard answer "have you updated your video drivers lately".