Errors with the invitation system

Hey! Thanks a lot for your e-mails telling me I should fix my website soon - I would not have seen the errors while accepting the invitations... (I am already invited... so...) ;-) It should all be fixed now - I had to restore a backup from the 28th october. I sent new invitation codes to the people who requested since this day. All problems should be fixed by now - if you get an error anyway please report it by sending me an e-mail.