It could be you have a face underneath that's popping through? Another thing could be that the UV mapping is somehow messed up. That actually looks like some kind of degenerate polygon. Did you use a boolean to cut the hole in the surface? If so you may need to reduce the mesh to an editbale mesh if you did this in max. That crap maybe due to how you cut that hole in the surface. Infact, come to think of it, those lines look like edges in the geometry created from a boolean cut. it could be you have to go in and find those small edges and remove them.