from a rails 1.0 app i did rake freeze_edge and rake rails:update. that went fine.
when i go to the front page of my rails app I get

wrong number of arguments (2 for 3)
/var/www/somehost.net/site/public/../config/../vendor/rails/railties/lib/dispatcher.rb:63:in `failsafe_response'
/var/www/somehost.net/site/public/../config/../vendor/rails/railties/lib/dispatcher.rb:63:in `new_cgi'
/var/www/somehost.net/site/public/../config/../vendor/rails/railties/lib/dispatcher.rb:35:in `dispatch'
/var/www/somehost.net/site/public/dispatch.cgi:10


dispatch.rb lines 62-64
62:      def new_cgi(output)
63:        failsafe_response(output, '400 Bad Request') { CGI.new }
64:      end

dispatch.rb lines 88-89
88:      def failsafe_response(output, status, exception)
89:        yield

the argument count mis-match seems clear. any idea what i can do to resolve this?