I am having an issue where new pages I have added to the cart are displaying with the error:

Fatal error: main() [function.require]: Failed opening required '' (include_path='.:/usr/lib/php:/usr/local/lib/php') in /home/user/public_html/templates/template_name/main_page.tpl.php on line 128

I used the shipping.php files for my template, changing every instance needed to reflect the FAQ. I also have added the filename into filenames.php and edited the english.php file. The file faq.tlp.php is in the fallback directory. Everything appears to be as it should, but I am obviously missing something as the 3 different pages I am trying to add into the site come up with this exact same error.

I have used the following links (Link 1 - osCommerce / Link 2 - OSCDox Wiki) but to no avail, here I am stuck.

Anyone have any advice to offer here? Thanks in advance.