Friend Request and Sending Messages Not Working

Hi,
I'm using the latest version of WP and BP with your Community theme.
Link: cornhill.org/cornhillbeta

I accepted a friend request, but it is not showing in my list of friends and when I look at that member's profile it is not showing her as a friend either.

Also, when I try to send a member a private message, there is an error.

Any ideas on how I fix these items?

Thank you!