This article will explain what you can do if one or more of your Audio Units (AU) plug-ins are not showing up in LUNA. Many of these cases are often the result of the following causes:
- Audio Units plug-in is not installed
- Plug-in was not installed in Audio Units format (no AU support)
- Audio Units plug-in is not up to date
- Audio Units plug-in will not show up until LUNA and/or computer is restarted
- Audio Units plug-in is loaded on record-enabled track
- Loading an Audio Units plug-in on an unsupported track format
- LUNA Preferences are corrupted
The troubleshooting suggestions below address these possibilities.
Audio Units Plug-In Validation
Confirm that the Audio Units plug-ins are installed and that they are showing up in your Components folder. This can be verified by going to:
Check for Audio Units Plug-In Updates
Check with your plug-in vendor to verify that the latest version of the plug-in is installed, and that it is fully compatible with your operating system.
Restart your computer if the installer requires a restart.
Record-Enabled Tracks and Audio Units Plug-Ins
Audio Units plug-ins will only populate in the plug-in drop down list when the track is not record-enabled. Make sure the track that you are trying to insert the AU plug-in onto is not record-enabled as shown below.
Supported Track Formats in LUNA
At this time, LUNA only supports mono-to-mono and stereo-to-stereo track formats. If you are trying to use an Audio Units plug-in that only supports mono-to-stereo or stereo-to-mono formats, such plug-ins will only show up on mono tracks or stereo tracks.
The workaround for mono-to-stereo issues would be to convert the mono track to a stereo track (Track menu>Convert to Stereo), and then insert the AU plug-in on the stereo track.
Convert to Stereo option in Track menu
Resetting LUNA Preferences
LUNA preference files are used to save global LUNA system settings. To make sure these are not corrupted, delete the files below from ~/Library .
Note: To access ~/Library (which is hidden by the OS), hold down the Option key on your keyboard while accessing the Go menu in the macOS Finder (in the Menu Bar at top of screen when Finder is in the foreground). When Option is pressed, "Library" becomes visible in the menu so the hidden location can be opened.
Folder: ~/Library/Application Support/Universal Audio/workspace
Folder: ~/Library/Preferences/Universal Audio
Once deleted, empty the Trash on your Mac, and re-launch LUNA.
Submitting Feedback in LUNA
If you’ve followed all of the troubleshooting steps above but continue to not see your Audio Units plug-in(s) in LUNA, please submit feedback using the Feedback button in the upper left corner of LUNA. You will not receive a reply when using this Feedback feature, but all submissions are reviewed.