OK. I think I got the BuddyPress install working. Unfortunately, it uses a different forum backend than I had used before. That means new tables, and a new setup.
Right now it appears to be working for registered users. I had to set the avatars to use Gravatars: I can’t get the uploads working, but my pictures might just be too big to upload.
Go ahead and create a few groups and let me know how it’s working. If you like the new Community features, drop me a line or bookmark them.