Most of the problems have been worked out. Make sure you select your country (even if USA) in both billing and shipping address in the little drop down menu on the ordering page.
If you have trouble with the checkout that is giving you zip code errors etc.. try making the screen size larger (like command + on a Mac). That way the fields align better. This is an issue that has been driving me and a number of customers nuts. Its a simple visual glitch. So until I can figure out how to fix it once and for all I am going to put up this little map.
If it isn’t working for you it may look like this:
When OK it should look like this: