Re-setting the Logic Pro X plug-ins cache manually

macOS and AU 64-bit format:

1. Close Logic Pro X.
2. Using macOS Finder go to “~/Library/Caches/AudioUnitCache/” (without the quotes). 
3. Manually delete the com.apple.audiounits.cache file (to force a complete new plug-ins scan). 
4. Re-open Logic Pro X.
5. Reboot the computer (mandatory).

After deleting the plug-ins cache file, on the next run, Logic Pro X will re-scan all of your Audio Unit plug-ins, and depending on the number of AU components installed, the process may take several minutes.

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