Module tests fail in Postgres

Trying this on MySQL returns this:

An error occurred. 
Path: /batch?id=5&op=do
Message: PDOException: SQLSTATE[42S02]: Base table or view not found: 1146 Table 'drupal7.simpletest929145watchdog' doesn't exist: INSERT INTO {watchdog} (uid, type, message, variables, severity, link, location, referer, hostname, timestamp) VALUES (:db_insert_placeholder_0, :db_insert_placeholder_1, :db_insert_placeholder_2, :db_insert_placeholder_3, :db_insert_placeholder_4, :db_insert_placeholder_5, :db_insert_placeholder_6, :db_insert_placeholder_7, :db_insert_placeholder_8, :db_insert_placeholder_9); Array
(
[:db_insert_placeholder_0] => 1
[:db_insert_placeholder_1] => file
[:db_insert_placeholder_2] => The file permissions could not be set on %path.
[:db_insert_placeholder_3] => a:1:{s:5:"%path";s:48:"sites/mysql.style.wgtn.cat-it.co.nz/files/styles";}
[:db_insert_placeholder_4] => 3
[:db_insert_placeholder_5] => 
[:db_insert_placeholder_6] => http://mysql.style.wgtn.cat-it.co.nz/batch?id=5&op=do
[:db_insert_placeholder_7] => http://mysql.style.wgtn.cat-it.co.nz/batch?op=start&id=5
[:db_insert_placeholder_8] => 192.168.2.122
[:db_insert_placeholder_9] => 1249852563
)
in dblog_watchdog() (line 148 of /home/josh/projects/drupal7/modules/dblog/dblog.module).

Am I doing something wrong?

OK, it was a bug. dblog watchdog was called to write a record to watchdog before it was installed. changed file permissions and it worked.

no longer needs to be open