Final Cut Pro 10.4.4. Update: Waves Audio Plugin GUI Issue
Updated Final Cut Pro to 10.4.4. and most of my Waves Audio plugins no longer display their GUI control interface, just a red box. The plugins still work via the sliders in the Inspector window so it doesn't appear to be a 64bit plugin compatibility problem, they just don't display the GUI properly.
MacBook Pro, macOS Mojave (10.14.1), null