The error was: javax.servlet.ServletException: DecorationTag: Couldn't find database name for "auth" on site "www.cps-forces.org".

The problem was that we were running the system on a temporary server (robotst.eecs.berkeley.edu).

The fix was to edit /home/www/java/cps-forces/WEB-INF/classes/gsrc/conf/site.properties

#sitename               = www.cps-forces.org                                                                                                                                            
sitename                = robotst.eecs.berkeley.edu

#mailServer             = cps-forces.org                                                                                                                                                
mailServer              = robotst.eecs.berkeley.edu

And then Restart Tomcat.