I get a bunch of errors when I go to the add/remove attendees page of a face to face session. I do get the page fields and controls under all of these messages (they are repeated, I guess for every potential student in the system?). Here are the messages:
Notice: Undefined property: stdClass::$idnumber in /home/moodle/moodle/user/selector/lib.php on line 601
Notice: Undefined property: stdClass::$department in /home/moodle/moodle/user/selector/lib.php on line 601
Notice: Undefined property: stdClass::$institution in /home/moodle/moodle/user/selector/lib.php on line 601