I've been trying to render out a normal map using Max for the past two days. Every time I do these black spots appear and screw up the map. I've searched polycount/google and have tried a lot of things: resetting xform for LP mesh. Not using supersampling. Using Max 2.5 start supersampling, and then trying Hammersley with quality at 1.0. Using supersampling will blur the specs as bit, but they'll still be there. I've also tried using triangulated mesh.
I'm not sure if this is related to my render settings (I'm using the scanline renderer), or if it has something to do with my mesh, either the LP or HP.