Quote Originally Posted by royaldave View Post
Am using 1.5.4 and can't get it to work.

The checkout screen just has "Home" with no other breadcrumbs or content.

I get the following in debug -

[25-Sep-2016 12:06:41 Australia/Perth] PHP Fatal error: Call to a member function javascript_validation() on null in /var/www/html/zencart/includes/templates/template_default/templates/tpl_checkout_one_default.php on line 8 ....
What payment modules do you have configured? Do you get the same error if you disable the One-Page Checkout?