Image print is "dongle specific" that is, while the software will print on any Mac below 0Sx 10.7, the dongle which plugs into the USB port of the computer will not. I just upgraded to version 9 and the only reason I did was because I was upgrading to Lion (OSx 10.7) on my Mac. It's great software and have used since version 5--Version 8 as being sold here, for my purposes, would have worked just fine, and if you have no intent to go to Lion, then IP8 is great.