ruby on rails - Devise not generating paths (rake routes shows everything as expected) -

i have rails app devise / omniauth , paths devise not being recognized reason. when use example "app_user_omniauth_authorize_path(:facebook)" undefined method error. same other paths..

rake routes  

returns this:

                 dev_section post     /dev_section(.:format)                       custom_actions#dev_section       new_app_user_session      /app_users/sign_in(.:format)               devise/sessions#new           app_user_session post     /app_users/sign_in(.:format)               devise/sessions#create   destroy_app_user_session delete   /app_users/sign_out(.:format)              devise/sessions#destroy app_user_omniauth_authorize get|post /app_users/auth/:provider(.:format)        app_users/omniauth_callbacks#passthru {:provider=>/facebook|twitter|google_oauth2/} app_user_omniauth_callback get|post /app_users/auth/:action/callback(.:format) app_users/omniauth_callbacks#(?-mix:facebook|twitter|google_oauth2)          app_user_password post     /app_users/password(.:format)              devise/passwords#create      new_app_user_password      /app_users/password/new(.:format)          devise/passwords#new     edit_app_user_password      /app_users/password/edit(.:format)         devise/passwords#edit                              put      /app_users/password(.:format)              devise/passwords#update cancel_app_user_registration      /app_users/cancel(.:format)                devise/registrations#cancel      app_user_registration post     /app_users(.:format)                       devise/registrations#create  new_app_user_registration      /app_users/sign_up(.:format)               devise/registrations#new edit_app_user_registration      /app_users/edit(.:format)                  devise/registrations#edit                              put      /app_users(.:format)                       devise/registrations#update                              delete   /app_users(.:format)                       devise/registrations#destroy 

in routes.rb have:

  devise_for :app_users, :controllers => {:omniauth_callbacks => "app_users/omniauth_callbacks" } 

all omniauth controllers built according devise examples.. can wrong?

* edit *

i realized might worth mentioning, using refinerycms..

devise.rb looks this:

devise.setup |config|    config.mailer_sender = "please-change-me-at-config-initializers-devise@example.com"      activesupport.on_load(:active_record)     devise.setup       require 'devise/orm/active_record'     end   end      config.authentication_keys = [ :login ]      config.case_insensitive_keys = []      config.skip_session_storage = [:http_auth]      config.stretches = rails.env.test? ? 1 : 10      config.password_length = 4..128      config.reset_password_within = 6.hours      config.sign_out_via = :delete       config.router_name = :refinery end