When I click on Customers and then select EDIT I receive the following error message:

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 '// c.customers_newsletter, c.customers_default_address_id, ' at line 6
in:
[select c.customers_id, c.customers_gender, c.customers_firstname, c.customers_lastname, c.customers_dob, c.customers_email_address, a.entry_company, a.entry_street_address, a.entry_suburb, a.entry_postcode, a.entry_city, a.entry_state, a.entry_zone_id, a.entry_country_id, c.customers_telephone, c.customers_fax, // c.customers_newsletter, c.customers_default_address_id, c.customers_email_format, c.customers_group_pricing, c.customers_authorization, c.customers_referral from zen_customers c left join zen_address_book a on c.customers_default_address_id = a.address_book_id where a.customers_id = c.customers_id and c.customers_id = '3']

My versions are:
phpMyAdmin - 2.11.9.1
MySQL client version: 4.1.22
Zen Cart 1.3.8a

I see the tables zen_customers and zen_address_book, but don't understand the error message entirely in order to fix the problem. Also, I know that this query can be found in /admin/customers.php. Is this where I need to fix, or in PHPMyAdmin??

I have only one customer (myself) that I created as a test.