error in profile

Hi
After activating the plugin the following error appear in the profile pages .

Warning: call_user_func_array() expects parameter 1 to be a valid callback, function ‘wds_bp_registration_options_bp_before_member_header’ not found or invalid function name in /home/risomanc/domains/risoman.com/public_html/wp-includes/plugin.php on line 406

http://wordpress.org/extend/plugins/bp-registration-options/