I tried to change the Theme from the Course Configuration page to "union", but got the following error message. I looked in the directory mentioned below and there is no union directory. Should there be one there?
--rac
Error messages
failed to read file /opt/webwork/webwork2/conf/templates/union/system.template: No such file or directory at /opt/webwork/webwork2/lib/WeBWorK/Utils.pm line 156.