When loading up the ROLE Space at http://graaasp.epfl.ch/role_project, the following error occurrs repeatedly (on each event on the Open App bus):
evt_counter is not defined
alert("<h3>Event #" + (evt_counter++) + "</h3>" + toString(envelope));
Looking into the code, I realized that the variable definition is just commented out. I suggest to not show alerts everytime an event occurs. Nagging... This might probably be a relic from debugging.