Drb error

I have acts_as_ferret as script in my app. When I try to run app, it
says…

=====================
DRb::DRbConnError in BugController#index

connection closed

RAILS_ROOT: ./script/…/config/…
Application Trace | Framework Trace | Full Trace

c:/ruby/lib/ruby/1.8/drb/drb.rb:570:in load' c:/ruby/lib/ruby/1.8/drb/drb.rb:632:inrecv_reply’
c:/ruby/lib/ruby/1.8/drb/drb.rb:921:in recv_reply' c:/ruby/lib/ruby/1.8/drb/drb.rb:1195:insend_message’
c:/ruby/lib/ruby/1.8/drb/drb.rb:1086:in method_missing' c:/ruby/lib/ruby/1.8/drb/drb.rb:1170:inopen’
c:/ruby/lib/ruby/1.8/drb/drb.rb:1085:in method_missing' c:/ruby/lib/ruby/1.8/drb/drb.rb:1103:inwith_friend’
c:/ruby/lib/ruby/1.8/drb/drb.rb:1084:in method_missing' C:/rails/bughive/vendor/plugins/acts_as_ferret/lib/remote_index.rb:16:insend’
C:/rails/bughive/vendor/plugins/acts_as_ferret/lib/remote_index.rb:16:in
method_missing' C:/rails/bughive/vendor/plugins/acts_as_ferret/lib/act_methods.rb:189:inacts_as_ferret’
C:/rails/bughive/app/models/post.rb:8
C:/rails/bughive/app/controllers/post_controller.rb:9:in `index’

I have configured ferret_server.yml but problem still persists :confused: