Ok so i'm working on this project in udk constructing building using various different meshes. I'm having a problem with some of them where they go completely black in some areas but are fine in others. They are planes but I gave them a second map channel and I also up'd the resolution from 32 to 64 but i'm still getting this problem. Does it have to do with it overlapping? I pointed to the problem and pointed to the same mesh doing just fine in another area. Any help is appreciated.