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Logic Pro 7: Startup modifier keys

By holding down modifier keys during application launch, you can put Logic Pro in one of several troubleshooting modes.

To do that, just double-click the Logic Pro application icon, then hold down the respective modifier key(s) until a dialog pops up or Logic is fully loaded.

here or from an AppleCare representative.
New with the Option Key held down will load a plain empty default song for troubleshooting.

Published Date: Feb 19, 2012