It is likely he is using old Geomason code. Try updating from the subversion repository to get critical bug fixes.
Sent from my Nexus One phone
On Mar 21, 2011 11:35 AM, "Keith Sullivan" <[log in to unmask]
> There is nothing wrong with the shape file; the attached code runs 10 agents around the roads of Great Britain, similar to the CampusWorld demo. I would need to see your code to offer any insight as to why you can't display the shape file.