buddypress error header message

Hello, I have been adding some new plug ins to buddy press some from you guys and some from the buddypress/wordpress site.

I am not getting this message -

Warning: Missing argument 2 for wpdb::prepare(), called in /websites/123reg/LinuxPackage21/md/nb/et/mdnbeta.org/public_html/wp-content/plugins/profiles-manager-for-buddypress/frontEngine.php on line 50 and defined in /websites/123reg/LinuxPackage21/md/nb/et/mdnbeta.org/public_html/wp-includes/wp-db.php on line 1152

I can't work out where this has come from or what has started it - I have tried deactivating plug ins and even deleting some but it's still there even on the home page -

http://www.mdnbeta.org/

Any Ideas?

Thanks in advance