Hi Just opened Garageband for the 1st time on my 2011 2.5GHz Mac Mini and been confronted with this message: "GarageBand has detected a MIDI timeout. Please restart your computer, then relaunch GarageBand. If the problem persists, update the drivers of all connected MIDI devices (including audio drivers with MIDI functionality) to the latest version. For instructions on removing older drivers, consult the manufacturers' documentation." I've restarted the computer several times & ensured all software updates are installed, but the program still refuses to run. I'm completely new to Garageband, so any help would be appreciated.