I am running SB Pro PE on a an Imac (1st generation) with a Radeon X1600 using Bootcamp, ergo Windows XP. I read somewhere else on this forum that this shouldn't be a problem. Other software (games) run fine. I can start the program so the dongle seems to work fine. I tried to remove the read only flag from folders but every time I check the folder to find out if the flag is removed it is still there. Any suggestions? I purchased this game a little different then most of the users since the CD-version was in back order. I downloaded the 6 files from he website and Ssnake send me the dongle. All seems to work untill I start a scenario. The error message flashes by. Too fast to read, even in windowed mode.