Final Cut Pro x app hangs on Validating audio units

In Finder Go -Go To File /Library/Audio/Plug-Ins/Components

removed all Presonus. Sent to trash can. Started FCP no problem. However Not allowing me to stop scanning of audio units at start up.

Double checked all by putting back StudioOne in library and yes FCP hangs when scan those Audio Units. As FCP does not have setting to stop A-U scaning at startup will have to remove StudioOne every time I want to use. A pain but workable for the time being.

Thanks,

Steve

Try deleting preferences.

To delete preferences, hold down command and option while starting FCP X and click Delete Preferences. The application will start in a default state, and open an “Untitled” library.

Reopen the library you were working on, set the preferences the way you like them, and try again.

If the problem persists, you may have some bad audio unit. In that case I’d remove them all, and then gradually add them back to try and find the problem ones.

I am not at my mac to confirm the exact location but it’s somewhere in /Library/Audio

I’m having the same problem. FCP scans audio units in Presonus Studio One and hangs on some of them

Did try recommend of delt-ing preferences to no avail.

Anyway to stop scan on startup?

Thank you,

Steve

FCP does not usually scan audio units every time.

It does seem to scan when there are changes, or when you manually tell it to.

To me, it is clear that one or more of your audio units is causing FCP to hang.

The only "honorable course of action" that I can think of is the one I mentioned before: divide and conquer.

Add a few at a time until you determine which is causing the problem, and leave it out, or replace it.

One or more of your audio units is causing FCP to struggle.

I can only give the same advice as before: remove the audio units. FCP will start.

Then gradually reintroduce them, and test.