Clicking on "create course" for the second time after pressing back button I got: An Error Was Encountered Error Number: 1062 Duplicate entry 'yaraci64' for

Clicking on "create course" for the second time after pressing back button I got: An Error Was Encountered Error Number: 1062 Duplicate entry 'yaraci64' for key 2 INSERT INTO `gm_courses` (`user_id`, `name`, `email`, `public_code`, `is_public`, `created_on`) VALUES ('3333', 'A', 'yaraci64', 850393, 1, '2010-02-04 16:37:46') I could not reproduce the issue again, though.