Rescan: Logic Pro & GarageBand

How to Rescan Plugins in Logic Pro & Garageband:

Make sure your UJAM plug-ins are installed correctly

You can confirm this here: 

/Library/Audio/Plug-Ins/Components

If the plug-in is stored in this location, you can move on to Step 2 – if not, install the plug-in using the UJAM App with the AU option enabled under Choose Plugin Settings.

Do an automatic reset

Launch Logic and go to Logic Pro > Preferences > Plug-in Manager

Select the plug-in and force a rescan by clicking on Reset & Rescan Selection. If you're using the most recent Logic version, you can even do a Full Audio Unit Reset. 

Confirm that you see the small blue checkmark under Use (newer versions of Logic swapped this for Hide and Ignore, so disable those if needed):

Manually clear the Audio Unit cache

If either of the Resets in Logic don't work, you can manually clear the cache to force a complete rescan on the next launch.

1. Click the Go menu in the Finder and select Library (if you don't see Library in the list, hold the option key)
2. Open the Caches folder
3. Delete the "AudioUnitCache" folder which should include the "com.apple.audiounits.cache" file
4. Restart your computer & launch Logic (don't skip this step)

Your plug-in(s) should now be available.

Additional Troubleshooting

• If the plug-in fails validation again, check your Logic and macOS versions for compatibility.

• See our Resolving Plugin Issues in Logic Pro for more in-depth info.