BuddyPress.org

You seem to have mu configuration problems. None of your subdomains can be reached. It’s best to get mu setup, configured and working properly before installing bp. Test mu blog creation and reachability, create and edit posts, make comments. Get comfortable with mu first.

It will make installing and configuring bp a whole lot easier. I played with mu for a month before I felt comfortable with it.

What type of host are you on? Shared, DV? Looks like you need to do some DNS tweaking for your subdomains to work.