After thinking about this some more, I would like to clarify. When I don't catch the exception, TG does not throw it. Instead, it appears to keep on going and throw the next exception it runs into. My code inherits from fastdata.DataController. An exception should be thrown in the create method because of the unique constraint in the database. Instead, TG is throwing an exception sometime later when it tries to use the connection for a select. The connection is no good because the first exception (which TG hid) invalidated the transaction. What bothers me is that TG is not throwing the exception when it should.
Randall
