Hi guys, a little urgent help is needed! As is typical, Logic 9 works fine for months, and then a client comes to record, and it all goes pear-shaped...I've sent him away, hopefully I'll have it fixed by this afternoon. When I load up any song file, and try to press play, Logic acts buggy. I usually press play with the "number pad Enter" button, but this instead acts like a left-click of the mouse, drawing a selection box on the arrange window when I move the mouse. The mac then becomes totally unresponsive to mouse clicks. I press Cmd-Alt-esc, and that seems to let me get back in, and I can close any open windows. Logic can be controlled a little with e.g. the space bar, to make the music play, but even then, it is erratic. The issue started yesterday when I happened to be playing with the ES2, and using my novation49SL MkII controller keyboard, with the automap software. I rarely use this, but it always boots up with logic automatically, and the novation keyboard usually works fine. I'm not sure if this is connected, or if it's incidental. I'm wondering if somehow the keyboard settings or key commands have been corrupted or something? What I've tried: 1. Removing the com.apple.logic.pro.plist and com.apple.logic.pro.cs, and then booting into a song (same issue) 2. Removing the Logic Pro application from the Applications folder, and reinstalling it from the CD (installation failed-no explanation why) 3. Using Time-Machine to copy the old Logic Pro Application file from a month ago. (same issue) Model Name: iMac Model Identifier: iMac11,1 Processor Name: Intel Core i7 Processor Speed: 2.8 GHz Number Of Processors: 1 Total Number Of Cores: 4 L2 Cache (per core): 256 KB L3 Cache: 8 MB Memory: 8 GB Running Snow Leopard with latest version of Logic 9. Soundcard is a Prism Orpheus. Suggestions? Should I be reinstalling soundcard drivers? Should I be completely reinstalling Logic? Why did the installation from CD fail?