I haven't touched this site in weeks. Just left it and updated the prices, yet someone has contacted me today saying they cannot add items to the cart if they are viewing them in a list (ie vegetables) and changing the quantity for multiples products. If they go into each product they can then add it to the cart. Any idea what could be causing this? It worked fine for this customer last week but isn't this week. It works fine either way for me on FF but I also have the same issue in IE.

www.livingtowers.com