I just installed this addon and its acting really weird.

First of all, I don't get the big blue Google Checkout button on the shopping cart page. Instead I get a radio button on the payment page.

Second of all, if I select Google Checkout as my payment option, it just redirects me back to the shopping cart page after I hit "confirm".

What is going on???

Link: http://www.fragrancesupplyco.com