BuddyPress.org

Apologies if this has already been posted, but I couldn’t find a solution. After upgrading to 1.5, I’m getting the following error on my WordPress pages:

Warning: in_array() expects parameter 2 to be array, null given in /var/www/wordpress/wp-content/plugins/bp-registration-options/bp-registration-options.php on line 1594

When I try to go to the Dashboard, I get the above error, plus these two:

Warning: Cannot modify header information – headers already sent by (output started at /var/www/wordpress/wp-content/plugins/bp-registration-options/bp-registration-options.php:1594) in /var/www/wordpress/wp-content/plugins/buddypress/bp-core/admin/bp-core-update.php on line 32

Fatal error: Call to undefined function is_site_admin() in /var/www/wordpress/wp-content/plugins/bp-registration-options/bp-registration-options.php on line 6

And nothing else. Anyone with an idea of what is going on here? Thanks for your help!