BuddyPress.org

Hi there! I have been searching through all of the posts and can’t find an answer. I tried updating from 1.5.7 to 1.6 and everytime, it brings me back to my homepage after install. Group posts are completly gone, and I can’t even get to the WP dashboard. Comes up as a 404. Homepage still looks the same, but anything associated with BP is gone, and the dashboard is gone. I have tried 3 different times now and everytime it does the same thing. Second time i disabled all plug ins and still didn’t work. What am I missing?