New Post: Buy Button not add more than one product

When the customer enters a number larger than 1 to the quantity field then clicks on the Buy button, nothing happens. If they enter the number 1 then click on buy it adds it to the cart. They are then able to go to the cart and update the number and recalculate the totals.

I have two shipping methods but one is no longer valid due to time constraints (this is a theater ticket purchase page and we can no longer ship due to time available.) so that ship method is disabled. This operates the same in Firefox, IE8 and Chrome.