I have used both 3.8 and 5 and was wondering if anyone knew how to solve my problem. Sometimes when I make a photo cd, during the bitmap creation process or the building phase, WinonCD will cause an illegal procedure. Now it only does this sometimes and it seems that a picture might be causing the problem. I check for corrupt pictures ahead of time also. I think it might be a single picture that is making it stop because if it is creating the bitmaps for a cd that it has stopped on before, it stops at the same place the next time I try it.