BuddyPress.org

There is a simple fix for the problem with saving data.
Look for admin_url and replace with network_admin_url, also, if there is something hard coded like site_url(“wp-admin/something.php”) change that to network_admin_url(“something.php”) and it will be solved. to sum up, all the urls pointing to wp-admin should be generated via network_admin_url for the compatibility with wpms 3.1