FLstudio still generates audio just fine. So I figured I'd export to mp3 to see what's going on, but that too is a silent file: right length, no audio data whatsoever.
If I close 20.1 and then ...
FLStudio for about 2 month now, I have an install of FLStudio 20.6 on macOS 10.14 "Mojave"
I've headed into the "Project General Settings" to assign a folder to hold all the audio files for a new project ...