BuddyPress.org

Hi – I had a regular BP install, working fine, and upgraded to Network (allowing user blogs). I want to deactivate the Network, as some plugins aren’t working in Network (specifically, BP Pending Activations). Anyone know how? When I remove this line:

define( ‘MULTISITE’, true );

It appears to deactivate Buddypress, which breaks my site…. how do I downgrade from Network without breaking the site? Thanks.