Hey!
So that's the latest OSX huh? Not sure hwy it wouldn't work.. This plugin is entirely 64-bit too.
I build against the 10.11 (El Capitan) SDK of OSX so it might be possible that Catalina has totally depreciated and removed the 10.11 runtime? Or it may be possible that you must manually install the 10.11 runtime now?
What do you mean by "stopped working"?