Ok, I just had this same error. Seems to be a theme with expats using foreign addresses... I fixed it by changing the address in "personal info" from a foreign residence back to a US residence. I think if you get to the end and pay with a card that has a US address, that has to match the address you put in Tax home -> "personal info". That was my case and changing the address from a foreign one back to the US address as the credit card, it fixed it and allowed me to checkout. Hopefully that helps someone
