Unfortunately the problem does not appear to be a routes problem but a ‘not initialised’ authlogic problem. By changing the App.Controller methods I have now moved the problem to the create procedure after logging on. I managed to create a user from the console and Authlogic filled in all the ‘special’ fields. But logging on and calling the create session (call Authentication) causes the same error undefined method `underscore'' for nil:NilClass which occurs when calling @authentication.save. def create @authentication = Authentication.new(params[:authentication]) if @authentication.save flash[:notice] = "Login successful!" redirect_to root_url else render :action => :new end end My App.Controller now has the session/user checking methods and cause no problems. (so far) private def current_user return @current_user if defined?(@current_user) @current_user = current_user_session && current_user_session.user end def current_user_session return @current_user_session if defined?(@current_user_session) if defined?(Authentication.Find) then @current_user_session = Authentication.find else @current_user_session=nil end end I am using rails 2.3.8 and Authlogic 2.1.6, and I like to try and keep to one word descriptions of models and controls so Authentication instead of UserSession. -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk+unsubscribe@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.