Attempting to enroll in a course results in:
PHP fatal error in /usr/local/apache/common-local/php-1.21wmf10/extensions/EducationProgram/includes/TimelineGroup.php line 67:
Class 'UnknownGroup' not found
See for example: http://en.wikipedia.org/wiki/Education_Program:Example_University/Example_Course_(2013_Q1)
Version: master
Severity: critical