Modal add to cart empty

Hi, I have the "stay and display a popup notice" option enabled when a customer clicks on "add to cart" but the window that pops up doesn't contain anything.

Hi,

Can you try it with the "Use AJAX when possible for add to cart buttons " put to YES ?

Hi, yes i have that set to yes, as when it's set to no then no window appears, the screen just refreshes.

It's probably a problem with the component.php file (used for popups) of your template. For example, if it's missing the jdoc component tag, it could create such problem:
docs.joomla.org/Jdoc_statements#Component

You were spot on with that reply. I had duplicated a template to modify it for the shop part of the site and this had rewritten one of the links to a local link. Problem solved, thanks...