If a product name or description is added with a single quote, such as to denote inches, it causes the site to behave erratically. The issue is most apparent when trying to add the item to an order, when you click save it fails to load the next page. Then when you return to the order it will have added numeric value to the order total but will not add a line item. It appears that the unslashified quotes cause the Javascript to be incomplete.