Hi, I'm trying to get Logic X to open on my Mac Pro 1.1 Lion 10.7.5 but without much success. I've edited the plist which should allow Logic to run on Lion, but it just quits when I attempt to open it. The MP has 2 x 3HGz Quad-core intel upgrade, but is the 2.1 firmware update also needed to run Logic X on my setup? I run Logic Pro 9 and Pro Tools 10 with some fairly cpu hungry VIs without any hitches so the system is very stable. Any suggestions would be much appreciated.