原因が特定できないのですが、環境は

ubuntu 6.06
ruby 1.8.4 (2005-12-24) [i486-linux]
gem 1.3.0
rails 2.1.0

:~/rails/current$ ./script/console 
Loading production environment (Rails 2.1.0)
Expected /usr/lib/ruby/gems/1.8/gems/jpmobile-0.0.3/lib/jpmobile/emoticon.rb to define Jpmobile::Emoticon
/usr/lib/ruby/gems/1.8/gems/activesupport-2.1.0/lib/active_support/dependencies.rb:261:in `load_missing_constant'
/usr/lib/ruby/gems/1.8/gems/activesupport-2.1.0/lib/active_support/dependencies.rb:467:in `const_missing'
/usr/lib/ruby/gems/1.8/gems/jpmobile-0.0.3/lib/jpmobile/emoticon.rb:3
/usr/local/lib/site_ruby/1.8/rubygems/custom_require.rb:27:in `require'
/usr/lib/ruby/gems/1.8/gems/activesupport-2.1.0/lib/active_support/dependencies.rb:509:in `require'
/usr/lib/ruby/gems/1.8/gems/activesupport-2.1.0/lib/active_support/dependencies.rb:354:in `new_constants_in'
/usr/lib/ruby/gems/1.8/gems/activesupport-2.1.0/lib/active_support/dependencies.rb:509:in `require'
/usr/lib/ruby/gems/1.8/gems/jpmobile-0.0.3/lib/jpmobile.rb:30
/usr/lib/ruby/gems/1.8/gems/jpmobile-0.0.3/lib/jpmobile.rb:29
/usr/local/lib/site_ruby/1.8/rubygems/custom_require.rb:27:in `require'
/usr/lib/ruby/gems/1.8/gems/activesupport-2.1.0/lib/active_support/dependencies.rb:509:in `require'
/usr/lib/ruby/gems/1.8/gems/activesupport-2.1.0/lib/active_support/dependencies.rb:354:in `new_constants_in'
/usr/lib/ruby/gems/1.8/gems/activesupport-2.1.0/lib/active_support/dependencies.rb:509:in `require'
/usr/lib/ruby/gems/1.8/gems/rails-2.1.0/lib/rails/gem_dependency.rb:57:in `load'
/usr/lib/ruby/gems/1.8/gems/activesupport-2.1.0/lib/active_support/core_ext/symbol.rb:11:in `to_proc'
/usr/lib/ruby/gems/1.8/gems/rails-2.1.0/lib/initializer.rb:246:in `load_gems'
/usr/lib/ruby/gems/1.8/gems/rails-2.1.0/lib/initializer.rb:137:in `process'
/usr/lib/ruby/gems/1.8/gems/rails-2.1.0/lib/initializer.rb:93:in `run'
/var/www/sites/demo3/rails/releases/20081021053254/config/environment.rb:16
/usr/lib/ruby/1.8/irb/init.rb:252:in `load_modules'
/usr/lib/ruby/1.8/irb/init.rb:250:in `load_modules'
/usr/lib/ruby/1.8/irb/init.rb:21:in `setup'
/usr/lib/ruby/1.8/irb.rb:54:in `start'
/usr/bin/irb:13
/var/www/sites/demo3/rails/releases/20081021053254/app/controllers/application.rb:5:NameError: undefined local variable or method `transit_sid' for ApplicationController:Class
/var/www/sites/demo3/rails/releases/20081021053254/app/controllers/application.rb:5:NameError: undefined local variable or method `transit_sid' for ApplicationController:Class