I'm working on a client's website which is run with zencart 1.3.9h
We are having issues with the New Product listing page when customers are trying to add multiple products to their shopping cart.

If you check the New Products link, there are multiple products with quantity boxes, and a button at the top and bottom of each page to 'add selected products to cart'. When this link is clicked, nothing happens at all and the cart remains completely empty. This happens regardless of how many products have been selected - one or 10.

http://www.scrapfx.com.au/store/inde...w&disp_order=6

Products can only be added to the shopping cart from the product detail page as linked here:

If you click on a Category, the category listing displays, yet if you click 'add to cart' for any of the displayed product list, it takes you to the Product Detail page (where you then have to click again to purchase) instead of just adding the product immediately to the cart. See below:

http://www.scrapfx.com.au/store/inde...=index&cPath=2

I've scoured the forums for hours, yet can't find anything to point me to a solution. I've never had this issue before, the only two things l can think of is that the hosting is run with Plesk, and that somehow this requires a different approach, or that l have the sessions file path or configuration file paths wrong (or both). l've attempted to change the filepaths but the zencart installation recommends the existing setting, and each time l've tried to alter it, the whole store is lost.

I've installed a fresh store in another folder on the same server, used the classic template and added no modules & made no changes. Added two products to the store, and l still get the same problems.

The filepath l'm using is: (as recommended during zc installation)

/var/www/vhosts/scrapfx.com.au/httpdocs/store/

Any ideas as to what might be wrong?