That ost_staff table looks like this:DROP TABLE IF EXISTS `%TABLE_PREFIX%staff`;CREATE TABLE `%TABLE_PREFIX%staff` ( `staff_id` int(11) unsigned NOT NULL auto_increment, `group_id` int(10) unsigned NOT NULL default '0', `dept_id` int(10) unsigned NOT NULL default '0', `timezone_id` int(10) unsigned NOT NULL default '0', `username` varchar(32) NOT NULL default '', `firstname` varchar(32) default NULL, `lastname` varchar(32) default NULL, `passwd` varchar(128) default NULL, `backend` varchar(32) default NULL, `email` varchar(128) default NULL, `phone` varchar(24) NOT NULL default '', `phone_ext` varchar(6) default NULL, `mobile` varchar(24) NOT NULL default '', `signature` text NOT NULL, `notes` text, `isactive` tinyint(1) NOT NULL default '1', `isadmin` tinyint(1) NOT NULL default '0', `isvisible` tinyint(1) unsigned NOT NULL default '1', `onvacation` tinyint(1) unsigned NOT NULL default '0', `assigned_only` tinyint(1) unsigned NOT NULL default '0', `show_assigned_tickets` tinyint(1) unsigned NOT NULL default '0', `daylight_saving` tinyint(1) unsigned NOT NULL default '0', `change_passwd` tinyint(1) unsigned NOT NULL default '0', `max_page_size` int(11) unsigned NOT NULL default '0', `auto_refresh_rate` int(10) unsigned NOT NULL default '0', `default_signature_type` ENUM( 'none', 'mine', 'dept' ) NOT NULL DEFAULT 'none', `default_paper_size` ENUM( 'Letter', 'Legal', 'Ledger', 'A4', 'A3' ) NOT NULL DEFAULT 'Letter', `created` datetime NOT NULL, `lastlogin` datetime default NULL, `passwdreset` datetime default NULL, `updated` datetime NOT NULL, PRIMARY KEY (`staff_id`), UNIQUE KEY `username` (`username`), KEY `dept_id` (`dept_id`), KEY `issuperuser` (`isadmin`), KEY `group_id` (`group_id`,`staff_id`)) DEFAULT CHARSET=utf8;