A few people have contacted me who are having problems buying tickets online through the official site for the U.S. and Candada tour.  If you are having difficulty buying tickets online, you can call the following number instead - 1-800-594-8499.  It's run by the Musictoday people (who are running the official pre-sale, but you don't need a password or username or any of that stuff to buy the tickets. Just give the band name, where they are playing, and the date, and they will find it for you.