Amazon Checkout Missing

I've setup Amazon Checkout in payment options but it doesn't appear as an option at checkout. I've tried putting it in both the Internet Payments and the Other Payment Options categories. I am able to add/remove other payment options and they appear no problem. What could be the issue?

Are you going a script error in the viewcart area?

I am also trying to setup amazon payment, but get an error in the view cart and nothing shows in checkout?

Before you spend more time on this: