Whenever we experience issues like this the magic formula normally is…
- Make sure the plugin is definitely not on disc in either ~/Library/Audio/Plug-Ins/Components/ or /Library/Audio/Plug-Ins/Components/
- run auval -v x x x (don’t worry about this failing, it seems to clear some sort of cache, I guess because it went looking for something that doesn’t exist)
- log out and back in again