Well, actually, I did a clean install, linking it to my current DB.
It seems to be working just fine. I chose "do not overwrite" when it was making tables. I think there are a few tables added in 2.10b3, but I don't think anything else has been changed. (I hope I have this right). Anyway, things seem to be working properly.
It's nice to not be worrying about that /local directory.