Ok I purchased Pro Tools LE 8, installed it and downloaded the patch (8.3 if I remember?) for Snow Leopard...crashed Garage Band and PT. I tried a reinstall of GB, no good,... reinstall of OS from my disc., no good...uninstalled PT, no good. My brand new Snow Leopard is in the shop where they are doing a clean install of the OS. They've tried installing my saved PT program into 10.5,10.6 and 10.6.2...no good. I'll take my PT 8 intall CD in tomorrow and they will try to install it from there but I'm not optimistic. They get the message that it's a "core issue"...doesn't mean squat to me except that I've spent a lot of money on software that doesn't seem to work with a new Mac.