I am trying to use an AudioUnit plugin that requires a USB security authentication key. The first time I installed the Audio Unit I didn't have the key. When I received my key and authorized the software (Antares Auto Tune with the iLok USB key) the plugin did not show up.
I attempted to remove the cache files to force Garageband 10 to find the plugin but none of it worked.
The strange thing though is I can open Garageband 6 and the plugin shows up and if I create a new account on my computer the plugin shows up but this is suboptimal.