Well, it seems I forgot to add the acts_as_authenticated to the repository on my...

[selectricity-live] / vendor / plugins / acts_as_authenticated / generators / authenticated_mailer / templates / observer.rb

class <%= class_name %>Observer < ActiveRecord::Observer
  def after_create(<%= file_name %>)
    <%= class_name %>Notifier.deliver_signup_notification(<%= file_name %>)
  end

  def after_save(<%= file_name %>)
    <%= class_name %>Notifier.deliver_activation(<%= file_name %>) if <%= file_name %>.recently_activated?
  end
end