old Audio Unit Plug-Ins on macOS 10.15 Catalina
Posted: Sat May 23, 2020 6:47 pm
tips on installing old Audio Unit Plug-Ins on macOS 10.15 Catalina:
Apple added more security restrictions to macOS 10.15 Catalina. unless you specifically "allow" each Audio Unit plug-in (AU plug-in) that are not code-signed and/or notarized, it won't show up in the AU host apps such as GarageBand.
if you never installed the AU plug-in that you are going to install, make sure to "allow" the new AU plug-in in the General tab in the Security & Privacy pane in the System Preferences app after installing the AU plug-in and launching the AU host app such as GarageBand.
1. install (drag & drop into) the AU plug-in to the /Library/Audio/Plug-Ins/Components/ folder
2. launch your AU host app such as GarageBand
3. macOS will ask you if you want to move the new AU plug-in to Trash, click "Cancel"
4. open the System Preferences app, click the Security & Privacy icon, click the General tab, and click "Allow"
5. try to open the new AU plug-in in the AU host app
6. macOS will ask you if you want to open the new AU plug-in, click "Open"
7. now you can use the new AU plug-in in your AU host app such as GarageBand
the sequence of the events above might be different depending on how the AU host handles the AU plug-ins.
if you missed any of the steps above and the new AU plug-in doesn't show up, trash the new AU plug-in, trash the AudioUnitCache folder in the Caches folder in the Library folder in your home folder, emptying trash, and do the steps above again.
Apple added more security restrictions to macOS 10.15 Catalina. unless you specifically "allow" each Audio Unit plug-in (AU plug-in) that are not code-signed and/or notarized, it won't show up in the AU host apps such as GarageBand.
if you never installed the AU plug-in that you are going to install, make sure to "allow" the new AU plug-in in the General tab in the Security & Privacy pane in the System Preferences app after installing the AU plug-in and launching the AU host app such as GarageBand.
1. install (drag & drop into) the AU plug-in to the /Library/Audio/Plug-Ins/Components/ folder
2. launch your AU host app such as GarageBand
3. macOS will ask you if you want to move the new AU plug-in to Trash, click "Cancel"
4. open the System Preferences app, click the Security & Privacy icon, click the General tab, and click "Allow"
5. try to open the new AU plug-in in the AU host app
6. macOS will ask you if you want to open the new AU plug-in, click "Open"
7. now you can use the new AU plug-in in your AU host app such as GarageBand
the sequence of the events above might be different depending on how the AU host handles the AU plug-ins.
if you missed any of the steps above and the new AU plug-in doesn't show up, trash the new AU plug-in, trash the AudioUnitCache folder in the Caches folder in the Library folder in your home folder, emptying trash, and do the steps above again.