Popup not displaying for some items

Hi,

1. From what I can see, the issue here is that the hikashop.js file is missing from the page header. That should however never happen since the hikashop.js file is added to the page by the main helper.php file of HikaShop which is called by the tag insertion plugin in order to be able to load the add to cart button system in order to display it.
Try to add the code:

if(!strpos($body,'/media/com_hikashop/js/hikashop.js')){
					$body=str_replace('</head>','<script src="/media/com_hikashop/js/hikashop.js" type="text/javascript"></script></head>',$body);
					JResponse::setBody($body);
				}

if(!strpos($body,'function hikashopModifyQuantity(')){
					$body=str_replace('</head>','<script type="text/javascript">'.$this->addToCartJs.'</script></head>',$body);
					JResponse::setBody($body);
				}

Hi,

Can you provide a FTP access to your website via our contact form so that we can look at the code ?
Please include a link to this thread.
www.hikashop.com/contact-us.html

Several other issues were present in order to make the popup work for your configuration.
First, first the mootools-more library was not loading.
Second the jquery library was loaded twice.
I've had to add a few changes in the code of the same file (near the code change you already made), and also install the plugin jquery easy to fix the jquery library problem between your template and another extension.

The popup is working now.