I have updated to Catalina 10.15.1 and ProTools 2019.12 in a New 2019 MacPro running 1 HDX card and I would say that so far EVERYTHING works. Gatekeeper makes installing the plugins an adventure, but once everything is installed, it all seems to work. Even oooold plugins from 2014 open up fine and I have not had any crashes to speak of. Waves v10 (mercury) and v11 (the rest) both work.
10.15.2 is not yet qualified for PT, but then again, neither is anything I am using, so... Is it safe to go 15.2??
