Quote Originally Posted by Rick5150 View Post
Additional *IMPORTANT* Details: includes/configure.php file contents invalid. ie: DIR_FS_CATALOG not valid or not set
When you get the "Thank you for installing message", what's the complete URL in your browser's address bar?
Is that URL different from the store where your configured Zen Cart is operating?

Your symptoms sound very much like you're being pointed to another not-yet-installed copy of Zen Cart.