Hi. I just purchased a mac g4 osx or something like that. I tried to install logic pro 6 but stupidly left the xs usb key in while doing so. Now i cannot only not install it but the soft ware wont even allow me to open it anymore...what's going on? The first time it worked but did not recognise the xs key, i figured that was because i left it in during installation. I have since deleted all traces of logic 6 but still no luck in re installing it. The logic emagic hotlines won't help me because i deal with 6. Please if anyone knows what may be the problem and can held i'd be most grateful for some tips.