Checkout and update buttons on cart page not working in IE
I have just built a new site, and it works perfectly fine, except in Internet Explorer, whereas the checkout and update button on the cart page doesn't work. They do absolutely nothing.
I digged myself into it, hoping I will find something, and indeed I have. Those two inputs have been generated outside the form tag, which makes it clear why they don't do anything (only in IE). But I have no idea why this happened, or how I could cure it.
I used the commerce kickstart, and tried a fresh install with it, to see if the problem lived from the beginning, but it worked fine, as suspected. I'm guessing probably a module is messing around, I have turned of every modul which I don't need, with no positive result.
Any idea how i could cure this, as this is quite a major error, since noone can order in IE?
Thanks in advance!