CI_DB_mysql_driver

[eluser]somewhatjaded[/eluser]
I am trying to use sessions with a session database (having configured everything according to the users guide, and created the table, and can connect & run other queries on the database).

I am getting this error when I set

Code:

$config['sess_use_database']    = TRUE;

Fatal error: Call to undefined method CI_DB_mysql_driver::where() in C:\wamp\www\vendorcheck\system\libraries\Session.php on line 219

Does anyone have any ideas why?