How to fix NameError?

Hi,

I get the following error in production:

Processing Base#index (for 68.146.229.246 at 2006-05-28 14:49:59) [GET]
Parameters: {}

NameError (uninitialized constant FrontControllerController):
/usr/lib/ruby/gems/1.8/gems/activesupport-1.2.5/lib/active_support/dependencies.rb:195:in
const_missing' /usr/lib/ruby/gems/1.8/gems/activesupport-1.2.5/lib/active_support/dependencies.rb:72:inconst_missing’
generated/routing/recognition.rb:4:in recognize_path' /usr/lib/ruby/gems/1.8/gems/actionpack-1.11.2/lib/action_controller/routing.rb:458:inrecognize!’
/usr/lib/ruby/gems/1.8/gems/rails-1.0.0/lib/dispatcher.rb:38:in
dispatch' /usr/lib/ruby/gems/1.8/gems/rails-1.0.0/lib/fcgi_handler.rb:141:inprocess_request’
/usr/lib/ruby/gems/1.8/gems/rails-1.0.0/lib/fcgi_handler.rb:53:in
process!' /usr/lib/ruby/gems/1.8/gems/fcgi-0.8.6.1/./fcgi.rb:600:ineach_cgi’
/usr/lib/ruby/gems/1.8/gems/fcgi-0.8.6.1/./fcgi.rb:597:in each_cgi' /usr/lib/ruby/gems/1.8/gems/rails-1.0.0/lib/fcgi_handler.rb:52:inprocess!’
/usr/lib/ruby/gems/1.8/gems/rails-1.0.0/lib/fcgi_handler.rb:22:in
`process!’
dispatch.fcgi:24

Does anyone have an idea how I can fix this , or whta the error means?

Thanks

David