Once you managed to run the updated SQL file, did you re-run the installer? That should be enough to get you going.
If not, an alternative would be to run the following snippet against the database to create a user:
INSERT INTO `users` (`user_id`, `school_id`, `department_id`, `username`, `firstname`, `lastname`, `email`, `password`, `authlevel`, `displayname`, `ext`, `lastlogin`, `enabled`, `created`) VALUES
(NULL, 1, 0, 'admin', NULL, NULL, '
te...@example.com', '5baa61e4c9b93f3f0682250b6cf8331b7ee68fd8', 1, NULL, NULL, '2013-12-19 23:25:28', 1, '0000-00-00');
The password for that account is "password".
One other important thing to check is that there is an entry in the "schools" table as well - there should be one row in there with an ID of 1.
Craig.