I went in, got the session, put in my info and then got the 'cannot process order' stuff. Then after a while, checked again and the option was gone. Now I go in and the option is there, but if you try to order it says it cannot find any tickets. Now AHA confirmed the session is sold out. What a mess.
Can anyone remember how long it took to sold out last year? I remember going in the night of the first day and still being able to get tickets.