hmm I have no idea then.
Weird I went from 3.7.3 to 3.7.4 then to 3.8.1 Which in the backend says 3.8.0 alpha 2?
I get a white page when trying to view social groups but in 3.7.4 Social groups works fine. But if I move 3.7.4 Groups.php over to 3.8.1 it starts to work again but the tables are wrong.