MuseHub Kills Big Sur

I have been running the 4.0 beta for months.Today, I tried using the MuseHub upon getting the announcement. It opened once, and then would not open again. I restarted to find it in my menubar, but the rest of the Finder was unable to open any other Applications and Spotlight would not respond. Had to uninstall and restart to get my MacBook Pro back working.

Big Sur 11.6.7 MacBook Pro (Retina, 15-inch, Late 2013)