title: No Method Error on an unmodified Devise boolean
body: <p>I am working on a legacy RoR app and am in the midst of configuring devise (as a replacement for Restful_authentication plugin). I have ran into a very peculiar error. When I try to go to <code>/users/sign_in</code> page I get this </p>
  
  <pre><code>NoMethodError in Devise::SessionsController#new
  
  undefined method `is_navigational_format?' for #&lt;Devise::SessionsController:0x000000034b2078&gt;
  </code></pre>
  
  <p>The only time I have seen this error referenced is when someone is trying to override the devise session-controller with their own. (<a href="https://groups.google.com/d/msg/plataformatec-devise/jyYNhaRztDU/MLsjwxRvf_YJ" rel="nofollow">https://groups.google.com/d/msg/plataformatec-devise/jyYNhaRztDU/MLsjwxRvf_YJ</a>) I have not tried to do that. </p>
  
  <p>I have installed devise correctly (followed their wiki). I have added <code>devise_for :users</code> to my routes. I have restarted the server, many many times. If there is any more info,  or files needed, I will be happy to provide them. </p>
  
  <p>Edit when I ran <code>$LOAD_PATH.dup</code> in the rails console the output included </p>
  
  <pre><code>"/usr/local/rvm/gems/ruby-1.9.3-p429/gems/devise-2.2.4/lib", "/usr/local/rvm/gems/ruby-1.9.3-p429/gems/devise-2.2.4/app/controllers", "/usr/local/rvm/gems/ruby-1.9.3-p429/gems/devise-2.2.4/app/helpers", "/usr/local/rvm/gems/ruby-1.9.3-p429/gems/devise-2.2.4/app/mailers" 
  </code></pre>
  
  <p>I am using Rails 3.2.13, ruby 1.9.3 and devise 2.2.4
  This is the full-stack trace </p>
  
  <blockquote>
    <p>devise (2.2.4) app/controllers/devise_controller.rb:119:in <code>require_no_authentication'
    activesupport (3.2.13) lib/active_support/callbacks.rb:418:in</code><em>run</em>_1218703357271506681__process_action_<em>3906451143611010656</em>_callbacks'
    activesupport (3.2.13) lib/active_support/callbacks.rb:405:in <code>__run_callback'
    activesupport (3.2.13) lib/active_support/callbacks.rb:385:in</code>_run_process_action_callbacks'
    activesupport (3.2.13) lib/active_support/callbacks.rb:81:in <code>run_callbacks'
    actionpack (3.2.13) lib/abstract_controller/callbacks.rb:17:in</code>process_action'
    actionpack (3.2.13) lib/action_controller/metal/rescue.rb:29:in <code>process_action'
    actionpack (3.2.13) lib/action_controller/metal/instrumentation.rb:30:in</code>block in process_action'
    activesupport (3.2.13) lib/active_support/notifications.rb:123:in <code>block in instrument'
    activesupport (3.2.13) lib/active_support/notifications/instrumenter.rb:20:in</code>instrument'
    activesupport (3.2.13) lib/active_support/notifications.rb:123:in <code>instrument'
    actionpack (3.2.13) lib/action_controller/metal/instrumentation.rb:29:in</code>process_action'
    actionpack (3.2.13) lib/action_controller/metal/params_wrapper.rb:207:in <code>process_action'
    actionpack (3.2.13) lib/abstract_controller/base.rb:121:in</code>process'
    actionpack (3.2.13) lib/abstract_controller/rendering.rb:45:in <code>process'
    actionpack (3.2.13) lib/action_controller/metal.rb:203:in</code>dispatch'
    actionpack (3.2.13) lib/action_controller/metal/rack_delegation.rb:14:in <code>dispatch'
    actionpack (3.2.13) lib/action_controller/metal.rb:246:in</code>block in action'
    actionpack (3.2.13) lib/action_dispatch/routing/route_set.rb:73:in <code>call'
    actionpack (3.2.13) lib/action_dispatch/routing/route_set.rb:73:in</code>dispatch'
    actionpack (3.2.13) lib/action_dispatch/routing/route_set.rb:36:in <code>call'
    actionpack (3.2.13) lib/action_dispatch/routing/mapper.rb:42:in</code>call'
    journey (1.0.4) lib/journey/router.rb:68:in <code>block in call'
    journey (1.0.4) lib/journey/router.rb:56:in</code>each'
    journey (1.0.4) lib/journey/router.rb:56:in <code>call'
    actionpack (3.2.13) lib/action_dispatch/routing/route_set.rb:612:in</code>call'
    warden (1.2.1) lib/warden/manager.rb:35:in <code>block in call'
    warden (1.2.1) lib/warden/manager.rb:34:in</code>catch'
    arden (1.2.1) lib/warden/manager.rb:34:in <code>call'
    actionpack (3.2.13) lib/action_dispatch/middleware/best_standards_support.rb:17:in</code>call'
    rack (1.4.5) lib/rack/etag.rb:23:in <code>call'
    rack (1.4.5) lib/rack/conditionalget.rb:25:in</code>call'
    actionpack (3.2.13) lib/action_dispatch/middleware/head.rb:14:in <code>call'
    actionpack (3.2.13) lib/action_dispatch/middleware/params_parser.rb:21:in</code>call'
    actionpack (3.2.13) lib/action_dispatch/middleware/flash.rb:242:in <code>call'
    rack (1.4.5) lib/rack/session/abstract/id.rb:210:in</code>context'
    rack (1.4.5) lib/rack/session/abstract/id.rb:205:in <code>call'
    actionpack (3.2.13) lib/action_dispatch/middleware/cookies.rb:341:in</code>call'
    activerecord (3.2.13) lib/active_record/query_cache.rb:64:in <code>call'
    activerecord (3.2.13) lib/active_record/connection_adapters/abstract/connection_pool.rb:479:in</code>call'
    actionpack (3.2.13) lib/action_dispatch/middleware/callbacks.rb:28:in <code>block in call'
    activesupport (3.2.13) lib/active_support/callbacks.rb:405:in</code><em>run</em>_3871622813520347987_<em>call</em>_3063468228496691759__callbacks'
    activesupport (3.2.13) lib/active_support/callbacks.rb:405:in <code>__run_callback'
    activesupport (3.2.13) lib/active_support/callbacks.rb:385:in</code>_run_call_callbacks'
    activesupport (3.2.13) lib/active_support/callbacks.rb:81:in <code>run_callbacks'
    actionpack (3.2.13) lib/action_dispatch/middleware/callbacks.rb:27:in</code>call'
    actionpack (3.2.13) lib/action_dispatch/middleware/reloader.rb:65:in <code>call'
    actionpack (3.2.13) lib/action_dispatch/middleware/remote_ip.rb:31:in</code>call'
    actionpack (3.2.13) lib/action_dispatch/middleware/debug_exceptions.rb:16:in <code>call'
    actionpack (3.2.13) lib/action_dispatch/middleware/show_exceptions.rb:56:in</code>call'
    railties (3.2.13) lib/rails/rack/logger.rb:32:in <code>call_app'
    railties (3.2.13) lib/rails/rack/logger.rb:16:in</code>block in call'
    activesupport (3.2.13) lib/active_support/tagged_logging.rb:22:in <code>tagged'
    railties (3.2.13) lib/rails/rack/logger.rb:16:in</code>call'
    actionpack (3.2.13) lib/action_dispatch/middleware/request_id.rb:22:in <code>call'
    rack (1.4.5) lib/rack/methodoverride.rb:21:in</code>call'
    rack (1.4.5) lib/rack/runtime.rb:17:in <code>call'
    activesupport (3.2.13) lib/active_support/cache/strategy/local_cache.rb:72:in</code>call'
    rack (1.4.5) lib/rack/lock.rb:15:in <code>call'
    actionpack (3.2.13) lib/action_dispatch/middleware/static.rb:63:in</code>call'
    railties (3.2.13) lib/rails/engine.rb:479:in <code>call'
    railties (3.2.13) lib/rails/application.rb:223:in</code>call'
    railties (3.2.13) lib/rails/railtie/configurable.rb:30:in <code>method_missing'
    passenger (4.0.2) lib/phusion_passenger/rack/thread_handler_extension.rb:77:in</code>process_request'
    passenger (4.0.2) lib/phusion_passenger/request_handler/thread_handler.rb:135:in <code>accept_and_process_next_request'
    passenger (4.0.2) lib/phusion_passenger/request_handler/thread_handler.rb:106:in</code>main_loop'
    passenger (4.0.2) lib/phusion_passenger/request_handler.rb:449:in <code>block (4 levels) in start_threads'
    passenger (4.0.2) lib/phusion_passenger/utils/robust_interruption.rb:108:in</code>disable_interruptions'
    passenger (4.0.2) lib/phusion_passenger/request_handler.rb:444:in `block (3 levels) in start_threads'</p>
  </blockquote>