First, forgive me if this is a question that's already been addressed--I'm new to Reddit and although I checked, I didn't see this question. I'm trying to install AG on my MBP (Catalina 10.5.5), but it's come to a halt. After I thought AG was completely installed, I tried to open Safari, but a box popped up saying that AG was attempting to load extensions that I would specifically need to allow in System Preferences. (Would have been OK with me.) BUT, this warning described those extensions as "being incompatible with a future update to the OS." No further information given. So now I'm stumped--what do I do?