Quote Originally Posted by Jeff_Mash View Post
Nevermind - I figured it out. I had to set to FALSE the following configuration variable: Enable automatic redirects?

Once I did that, it worked just fine!
Sorry for the slow response, have been away from my notebook most of the weekend. Glad you were able to try changing a few options and found a solution. If I had to venture a guess... I'd guess the root cause is the 3rd party module you installed is not fully integrated into Zen Cart (it loads application_top.php but was not coded as a Zen Cart page).

If this is the case with your module, you want the "automatic redirects" feature enabled, and you are comfortable working with PHP:
Take a peek at this post about 3rd party modules not integrating as a Zen Cart page but loading Zen Cart's application_top. On some servers you may need the leading "/" added to the URI in the example.

Note: There is only one case where it may be advantageous for a 3rd party module to not be integrated as a Zen Cart page and load application_top. This is when the page needs to be able to operate while the database is unavailable (and the 3rd party module would need to be specially coded to work w/o a database connection). This is a very rarely encountered scenario.