[Zope] ZSQL-ERROR

[Mario Premke]

Hi,
I have installed Openticket an the
appropiate database .. when I now
go into Openticket and select the 
"sqlGenTicketId" - ZSQL-method for
testing the database-connection I get:

Error, exceptions.KeyError: unhandled
SQL used:
select max(ticket_id)+1 as new_ticket_id from tickets

In the mysql-monitor the same statement works.

What does the error-message mean ???
Thanks
Mario