OK I have noe decided to go for MySql as Postgres is too complex to set up for now with the system that I have. I am using the mysqlUserFolder-0.5.3. I have created a Role 'Manager' and I two users. However when I go to view the user I get the message which I don't understand: Zope Error Zope has encountered an error while publishing this resource. Error Type: AttributeError Error Value: class RoleManager has no attribute '__call__' Any help appreciated. Thanks Neil Blue