BuddyPress.org

WordPress single install 2.9. whatever and buddypress 1.2.2.1

I installed this plugin then deactivated buddypress – the plan was to do it just for a sec and then re-activate. But now my whole site is broken and wp-admin kicks this error:

Fatal error: Call to undefined function is_site_admin() in … /wp-content/plugins/buddypress-restrict-group-creation/bp-restrict-group-creation.php on line 286

Please update your plugin so that if it is active and buddypress isn’t, it doesn’t torch the site.

Thanks.