I have been getting this error randomly over the last week or so on my US-based account (note: I am using a Spanish credit card with a US-based address that just a-hem happens to share a postal code with my actual billing address in Spain, so there's all sorts of room for problems). Trying again a couple hours later has worked fine.

I have another account that's just funded with US gift cards from eBay, which also works, but was giving me a similar error last week.