Folks who have broken mat files are getting mat files made by us folks who did not develop our work in Pro Pack. I too had this problem with my UltraSalon Hair. The fix for this is fairly simple. I am going to cut and paste the solution here, for those who are having this problem. It is a small section of the MAT file from one of my UltraSalone MATS, both before the fix, and after the fix, so that you can see how to fix it. The solution is in the 0 0 line, we have been leaving it out, but without Pro Pack, we did not know of this, and the answer has only recently been discovered. For example: !NoMess.pz2 Your File!!! { version { number 3.0 { } } figure { material Chignon { NsExponent 40.4078 tMin 0 tMax 0 tExpo 0.6 transparencyMap ":Runtime:textures:UltraSalonTextures:PrincessHairTrans.jpg" ReflectionColor 1 1 1 1 } (snip) !NoMess.pz2 My File!!! { version { number 3.0 { } } figure { material Chignon { NsExponent 40.4078 tMin 0 tMax 0 tExpo 0.6 transparencyMap ":Runtime:textures:UltraSalonTextures:PrincessHairTrans.jpg" 0 0 This line must be inserted. ReflectionColor 1 1 1 1 } (snip) After the Mappath a 0 0 must be inserted. That is unfortunately very often missing. Now it goes with the ProPack. I hope it will help you.