Long time users who have had the product since before Zen Cart 1.5.6 may see an issue when going to Tools > EZ Pages. If you get a white screen, here is the fix: go to Admin > Tools > Install SQL Patches and run
ALTER TABLE customers_basket DROP COLUMN final_price;
ALTER TABLE ezpages DROP COLUMN languages_id;
ALTER TABLE ezpages DROP COLUMN pages_title;
ALTER TABLE ezpages DROP COLUMN pages_html_text;
NOTE: This should only affect users using a database prefix (e.g. "zen_" or "zc_") in their configure.php files.



