1 Reply Latest reply: Nov 29, 2012 10:00 AM by Michael Black
dmr0834 Level 1 (0 points)

I upgraded an application only to find, when finished, the new version was not compatible with my operating system.  Therefore, I can no longer use the application.  Is there a way to back-date the operating system so the upgrade never happened?  I know you can do it on PC's but unsure of Mac.  And can I upgrade the Operating System without having to buy a newer computer?

Mac Pro, Mac OS X (10.5.8)