Edit your /zc_install/sql/mysql_upgrade_zencart_137_to_138.sql file, using a reliable text editor such as Notepad++
Find the lines that look like this:
Code:
#audience list addition: customers who have signed up but never made a purchase
INSERT INTO query_builder (query_category, query_name, query_description , query_string) VALUES ('email,newsletters', 'Customers who have never completed a purchase', 'For sending newsletter to all customers who registered but have never completed a purchase', 'SELECT DISTINCT c.customers_email_address as customers_email_address, c.customers_lastname as customers_lastname, c.customers_firstname as customers_firstname FROM TABLE_CUSTOMERS c LEFT JOIN TABLE_ORDERS o ON c.customers_id=o.customers_id WHERE o.date_purchased IS NULL');
And add a # to the beginning of the INSERT INTO query_builder ... line. (just like the #audience list addition ... line has.)
Save the file and re-upload it to the same location on the server.
Then the upgrade step should continue fine.