Devise: неопределенный метод `deep_symbolize_keys' для nil:NilClass

Я создал совершенно новое приложение Rails 3. Когда я помещаю свой фильтр before_filter в свой контроллер, я получаю: неопределенный метод `deep_symbolize_keys' для nil:NilClass.

С этой трассировкой стека:
activesupport (3.0.0.beta4) lib/active_support/whiny_nil.rb:48:in method_missing' i18n (0.4.1) lib/i18n/backend/simple.rb:34:in store_translations'
i18n (0.4.1) lib/i18n/backend/base.rb:215:in load_file' i18n (0.4.1) lib/i18n/backend/base.rb:215:in каждый'
i18n (0.4.1) lib/i18n/backend/base.rb:215:in load_file' i18n (0.4.1) lib/i18n/backend/base.rb:21:in load_translations'
i18n (0.4.1) lib/i18n/backend/base.rb:21:in each' i18n (0.4.1) lib/i18n/backend/base.rb:21:in load_translations'
i18n (0.4.1) lib/i18n/backend/simple.rb:57:in init_translations' i18n (0.4.1) lib/i18n/backend/simple.rb:71:in lookup'
i18n (0.4.1) lib/i18n/backend/base.rb:34:in translate' i18n (0.4.1) lib/i18n.rb:152:in t'
/home/steven/.rvm/gems/ruby-1.8.7-p174/bundler/gems/devise-d498cf3a4e1a3fef3f4f071d4feec6a489efe480-master/lib/devise/failure_app.rb:59:in i18n_message' /home/steven/.rvm/gems/ruby-1.8.7-p174/bundler/gems/devise-d498cf3a4e1a3fef3f4f071d4feec6a489efe480-master/lib/devise/failure_app.rb:49:in redirect'
/home/steven/.rvm/gems/ruby-1.8.7-p174/bundler/gems/devise-d498cf3a4e1a3fef3f4f071d4feec6a489efe480-master/lib/devise/failure_app.rb:30:in respond' actionpack (3.0.0.beta4) lib/abstract_controller/base.rb:145:in send_action'
пакет действий (3.0.0.beta4) lib/abstract_controller/base.rb:145:в процессе process_action' actionpack (3.0.0.beta4) lib/abstract_controller/base.rb:114:in '
пакет действий (3.0.0.beta4) lib/action_controller/metal.rb:126:в отправке dispatch' actionpack (3.0.0.beta4) lib/action_controller/metal/rack_delegation.rb:14:in '
пакет действий (3.0.0.beta4) lib/action_controller/metal.rb:166:in action' /home/steven/.rvm/gems/ruby-1.8.7-p174/bundler/gems/devise-d498cf3a4e1a3fef3f4f071d4feec6a489efe480-master/lib/devise/failure_app.rb:17:in call'
/home/steven/.rvm/gems/ruby-1.8.7-p174/bundler/gems/devise-d498cf3a4e1a3fef3f4f071d4feec6a489efe480-master/lib/devise/failure_app.rb:17:in call' warden (0.10.7) lib/warden/manager.rb:114:in call_failure_app'
надзиратель (0.10.7) lib/warden/manager.rb:100:in process_unauthenticated' warden (0.10.7) lib/warden/manager.rb:47:in call'
пакет действий (3.0.0.beta4) lib/action_dispatch/middleware/head.rb:14:in call' rack (1.1.0) lib/rack/methodoverride.rb:24:in call'
пакет действий (3.0.0.beta4) lib/action_dispatch/middleware/params_parser.rb:21:in call' actionpack (3.0.0.beta4) lib/action_dispatch/middleware/flash.rb:177:in call'
пакет действий (3.0.0.beta4) lib/action_dispatch/middleware/session/abstract_store.rb:106:in call' actionpack (3.0.0.beta4) lib/action_dispatch/middleware/cookies.rb:235:in call'
activerecord (3.0.0.beta4) lib/active_record/query_cache.rb:31:in call' activerecord (3.0.0.beta4) lib/active_record/connection_adapters/abstract/query_cache.rb:28:in cache'
activerecord (3.0.0.beta4) lib/active_record/query_cache.rb:11:in cache' activerecord (3.0.0.beta4) lib/active_record/query_cache.rb:30:in call'
activerecord (3.0.0.beta4) lib/active_record/connection_adapters/abstract/connection_pool.rb:365:in call' actionpack (3.0.0.beta4) lib/action_dispatch/middleware/callbacks.rb:46:in call'
activesupport (3.0.0.beta4) lib/active_support/callbacks.rb:414:in _run_call_callbacks' activesupport (3.0.0.beta4) lib/active_support/callbacks.rb:88:in отправить'
activesupport (3.0.0.beta4) lib/active_support/callbacks.rb:88:in run_callbacks' actionpack (3.0.0.beta4) lib/action_dispatch/middleware/callbacks.rb:44:in call'
стойка (1.1.0) lib/rack/sendfile.rb:105:in call' actionpack (3.0.0.beta4) lib/action_dispatch/middleware/remote_ip.rb:48:in call'
пакет действий (3.0.0.beta4) lib/action_dispatch/middleware/show_exceptions.rb:48:in call' railties (3.0.0.beta4) lib/rails/rack/logger.rb:14:in call'
стойка (1.1.0) lib/rack/runtime.rb:17:in call' activesupport (3.0.0.beta4) lib/active_support/cache/strategy/local_cache.rb:72:in call'
стойка (1.1.0) lib/rack/lock.rb:11:in call' rack (1.1.0) lib/rack/lock.rb:11:in синхронизировать'
стойка (1.1.0) lib/rack/lock.rb:11:in call' actionpack (3.0.0.beta4) lib/action_dispatch/middleware/static.rb:30:in call'
railties (3.0.0.beta4) lib/rails/application.rb:145:in call' railties (3.0.0.beta4) lib/rails/application.rb:81:in отправить'
railties (3.0.0.beta4) lib/rails/application.rb:81:in method_missing' railties (3.0.0.beta4) lib/rails/rack/log_tailer.rb:15:in call'
стойка (1.1.0) lib/rack/content_length.rb:13:in call' rack (1.1.0) lib/rack/handler/webrick.rb:48:in service'
/home/steven/.rvm/rubies/ruby-1.8.7-p174/lib/ruby/1.8/webrick/httpserver.rb:104:in service' /home/steven/.rvm/rubies/ruby-1.8.7-p174/lib/ruby/1.8/webrick/httpserver.rb:65:in run'
/home/steven/.rvm/rubies/ruby-1.8.7-p174/lib/ruby/1.8/webrick/server.rb:173:in start_thread' /home/steven/.rvm/rubies/ruby-1.8.7-p174/lib/ruby/1.8/webrick/server.rb:162:in start'
/home/steven/.rvm/rubies/ruby-1.8.7-p174/lib/ruby/1.8/webrick/server.rb:162:in start_thread' /home/steven/.rvm/rubies/ruby-1.8.7-p174/lib/ruby/1.8/webrick/server.rb:95:in start'
/home/steven/.rvm/rubies/ruby-1.8.7-p174/lib/ruby/1.8/webrick/server.rb:92:in each' /home/steven/.rvm/rubies/ruby-1.8.7-p174/lib/ruby/1.8/webrick/server.rb:92:in start'
/home/steven/.rvm/rubies/ruby-1.8.7-p174/lib/ruby/1.8/webrick/server.rb:23:in start' /home/steven/.rvm/rubies/ruby-1.8.7-p174/lib/ruby/1.8/webrick/server.rb:82:in start'
стойка (1.1.0) lib/rack/handler/webrick.rb:14:in run' rack (1.1.0) lib/rack/server.rb:155:in start'
railties (3.0.0.beta4) lib/rails/commands/server.rb:62:in start' railties (3.0.0.beta4) lib/rails/commands.rb:30 railties (3.0.0.beta4) lib/rails/commands.rb:27:in tap'
рельсы (3.0.0.beta4) lib/rails/commands.rb:27
сценарий / рельсы: 6 : в `require'
скрипт/ рельсы:6