I get "There was an error of epic epicness!" when I try to sign up. :( Email is good, username is presumably unique, password should work. Are you guys closed to new users and just forgot to mention it?
Nope, definitely open for new users! I just signed up for a new account myself and it went through fine. I'd try another web browser to rule that out. If still not, email support@ with what email and username and we can create an account for you.