Quote Originally Posted by TLC View Post
I have the same problem here... this is what I get when I add something to the shopping cart using Chrome and IE;

An unknown response null: :text/html;
charset=utf-8: :SyntaxError: Unexpected end of input was received while processing an ajax call. The action you requested could not be completed.

This is what I get when I use Firefox;

An unknown response null: :text/html; charset=utf-8: :SyntaxError: JSON.parse: unexpected end of data at line 1 column 1 of the JSON data was received while processing an ajax call. The action you requested could not be completed.

I checked for the file includes/classes/split_page_results.php
The file was already there, but I uploaded it again to be sure... still getting same thing.
Ok, I figured it out! But just in case someone else has this problem, I found out it's the ajax.php file... Zen Cart has an updated ajax.php file. Took care of the problem!