i upgraded to logic 9 and while ago and realised it made my midi keyboard stop working. i presumed it broke, as i hadn't used it for a few weeks before anyway, so never thought much of it. now when i've tried it on a friends system with logic 8 it works fine? this is starting to really annoy me, that i can't get it to work! i've tried various usb cables, and looked in the audio midi setup and when it plugs in the 'midilink' icon lights up but still nothing. i have upgraded to snow leopard too, but my friends is on snow leopard aswell so i've counted that out. anyone any idea if this is fixable?