shopping cart blues

When I send an item to the shopping cart, it shows me a cart full products and says that the cart is full and the item cannot be added.
Any suggestions as to why this is and how to fix it. I have set add to Cart" links on all of the products but everyone does the same thing mentioned.

Hi,

That usually happens when you set a quantity of 0 for your products or when you set 0 in the option "Maximum number of items in the cart" of the configuration, or if you set limits vi the "limits" button of the products listing (in commercial editions only).
So please check that in HikaShop.