Sorry for the delay in my respond but I have been sick.
This is the link to the website.
products_results.php
On the right side of the web site, you will see 4 products categories, please click on "Necklaces" and when you get the list of products, then navigate with the "Next" option and you will get the error, same thing happen with categories that have a list of products that generate more than one page. It is interesting that once you get the error, if you click "Back" on the internet browser then click "Next" on the website page, it work just fine, seems the problem occur on the first click.
