Final Cut Pro "Incompatible Audio Units Found" Message - Waves Plug-ins

The message: "Incompatible Audio Units Found" with a list of Waves Plug-ins appears at Final Cut Pro launch.

This happened after I installed Waves Plug-ins using Waves Central app, but forgot to license the computer to use these specific plug-ins.

To get rid of the pesky message and validate the plug-ins, first license the plug-ins using Waves Central.

Go to Applications / Waves / Waveshells V11 and run “Waves AU Reg Utility Y 11.app”.

You might have a different version (11, 12 whatever) of Waves plug-ins, and in my case I had 4 of these utilities in the folder (Y = 1,3,6,9), I ran them all.

Go To User / Library / Preferences, and trash "com.apple.audio.infoHelper.plist". Empty The Trash. This will force FCPX to rescan and validate all plug-ins at launch.

But first, Restart the computer.

Re-Launch Final Cut X and be patient while FCPX validates Audio Units.