Logic Pro X Always rescans audio units on startup

Quefijo

New Member
Hi,

Logic is constantly re-scanning audio units on startup. How can I stop this.

Mac OS sierra 10.12.6 (16G29)

Logic v.10.4.0

Thanks,

Quefijo
 

W23

New Member
I’d love to hear an answer to this as well. Logic scans all 132 of my 3rd party AUs every time I start. It’s a tiny bit annoying
 
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W23

New Member
I got an answer to this from the KVR forums. It worked! I did both things suggested. I’ll just paste the info here for future reference:

I've heard of this behavior before. It was usually either a permissions issue related to the AudioUnits cache or some old Waves waveshells not scanning correctly, so Logic gets stuck in a loop rescannning them on every launch. I would check the caches folder:

~/Library/Caches/AudioUnitCache

There should be a decently sized com.apple.audiounits.cache file in there. If there isn't or it's 0kb, then maybe something is preventing it from being written. Try deleting the whole AudioUnitCache folder and let Logic recreate it. Maybe that will fix it. Also check ~/Library/Audio/Plug-Ins/Components to see if there are multiple waveshells present, which can sometimes clash with each other. Over the years I've had to run the Waves AU reg utility to fix issues with their plugins. It used to be found in the Applications/Waves/Waveshells folder.
 
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Tosh Nanda

New Member
Hello Guys,
Finally I have found a permanent solution to this issue.
1.Copy All files from Macintosh HD /Library/Audio/Plug-Ins/Components/
2.Paste to Macintosh HD/Users/your user name/Library/Audio/Plug-Ins/Components/
3.Click on Replace All

Next time when you start logic it will scan all audio units only once and the scan wont reoccur in every subsequent startup.

Best Wishes :)
 
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facej

Logician
And now you have 2 copies of each plugin - one in /Library/Audio/Plug-ins/Components and one in ~/Library/Audio/Plug-Ins/Components
 
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Tom S

New Member
Hello Guys,
Finally I have found a permanent solution to this issue.
1.Copy All files from Macintosh HD /Library/Audio/Plug-Ins/Components/
2.Paste to Macintosh HD/Users/your user name/Library/Audio/Plug-Ins/Components/
3.Click on Replace All

Next time when you start logic it will scan all audio units only once and the scan wont reoccur in every subsequent startup.

Best Wishes :)
I am having similar problems. I tried to follow your suggestion but after I copy the files and go to Macintosh HD/Users/your user name/ there is no folder called Library so no sub-folders under my folder. Is there a fix for this? Thanks. Tom S
 
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juggatv

New Member
I had these same issues for some months now. I actually stopped using logic to get around it.
Finally got back to trying today.

Move all my components out of the /Library/Audio/Plug-Ins/Components/ folder as stated above and that still didn't work.

It turns out in my case that it was Melodyne or the version of it that I had installed.

I uninstalled it and deleted the component and it started working for me again.

I hope that helps somebody.

I found this approach through a process of copying all of the files to my desktop and then moving them back in a few at a time, and restarting logic to see if it worked.
Then I would close logic, move a few more into the folder, and repeat the process.

In any case, good luck. It sucks to be locked out when inspiration strikes, or you have work to do.
 
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