My cache folder is located above the www directory per the Zen-Cart.com Security Recommendations. Its not accessable from a browser so that wouldnt work for this add-on?
I tried it but I had to create another cache folder under the www directory to make it work.
"Zen Cart Security Recommendations-
/cache
This is used to cache session and database information. The BEST security protection for this is to move it to a folder "above" the public_html/htdocs/www area, so that it's not accessible via a browser. (Requires changes to DIR_FS_SQL_CACHE setting in configure.php files as well as Admin > Configuration > Sessions > Session Directory."