Thanks Kate! That was the reason that I originally wrote it that way. If you have PP or P5, it will generate the png from the RSR, but not vice versa! It seems that the majority of the customers have P4, and that was the reason for this. I was going to add, later in the document about PP and P5 products, state png, but no RSR, and version number of 4.2 and/or 5 respectively.