
Originally Posted by
lat9
Woo-hoo! I'm glad you got the issue sorted. Those /includes/local/configure.php files can be "tricky" on an upgrade.
Zen Cart 1.5.5 (and later) split the DIR_FS_LOGS (and other definitions) out to /includes/defined_paths.php since the majority of the file-locations are simple derivatives of DIR_FS_CATALOG. That's why the definition is documented as "optional".