Hi.... i am using zencart 1.3x and newletter only ....2.2 but i get an sql error when eidting and saving something in the clients information ( admin/customers.php )

Error is:
Code:
1064 You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'confirmed = 1 WHERE customers_id = '2'' at line 4
in:
[UPDATE soemprefix_subscribers SET email_address = '[email protected]', email_format = 'TEXT' confirmed = 1 WHERE customers_id = '2' ]
If you were entering information, press the BACK button in your browser and re-check the information you had entered to be sure you left no blank fields.
I have no clue...what is wrong here..