Hello. I have recently installed ArtRage 2.5.20 starter edition on a MacOS 10.5.6 machine. Previously, I used ArtRage 2.5.20 starter on a Windows XP Tablet machine, along with InkArt 1.3. After I copied my .ptg files over from the XP machine to my Mac, I was able to open the files, but the canvas appeared to be blank. Any suggestions as to why my files appear fine on XP, but are blank on the Mac?