How to debug this

Hello,I get this message and I don’t know how to interprete this.I think
it has to do with plural tables and singular referencesThanks for any
help!Jim======================================================================================uninitialized
constant SubjectRAILS_ROOT: ./script/…/config/…

Application Trace | Framework Trace | Full Trace
c:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.3.1/lib/active_support/dependencies.rb:123:in
const_missing' c:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.3.1/lib/active_support/dependencies.rb:131:inconst_missing’
c:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.3.1/lib/active_support/inflector.rb:161:in
module_eval' c:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.3.1/lib/active_support/inflector.rb:161:inmodule_eval’
c:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.3.1/lib/active_support/inflector.rb:161:in
constantize' c:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.3.1/lib/active_support/core_ext/string/inflections.rb:59:inconstantize’
c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.12.1/lib/action_controller/pagination.rb:194:in
paginator_and_collection_for' c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.12.1/lib/action_controller/pagination.rb:129:inpaginate’
#{RAILS_ROOT}/app/controllers/admin_controller.rb:12:in list' -e:3:inload’
-e:3c:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.3.1/lib/active_support/dependencies.rb:123:in
const_missing' c:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.3.1/lib/active_support/dependencies.rb:131:inconst_missing’
c:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.3.1/lib/active_support/inflector.rb:161:in
module_eval' c:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.3.1/lib/active_support/inflector.rb:161:inmodule_eval’
c:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.3.1/lib/active_support/inflector.rb:161:in
constantize' c:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.3.1/lib/active_support/core_ext/string/inflections.rb:59:inconstantize’
c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.12.1/lib/action_controller/pagination.rb:194:in
paginator_and_collection_for' c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.12.1/lib/action_controller/pagination.rb:129:inpaginate’
c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.12.1/lib/action_controller/base.rb:910:in
send' c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.12.1/lib/action_controller/base.rb:910:inperform_action_without_filters’
c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.12.1/lib/action_controller/filters.rb:368:in
perform_action_without_benchmark' c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.12.1/lib/action_controller/benchmarking.rb:69:inperform_action_without_rescue’
c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.12.1/lib/action_controller/benchmarking.rb:69:in
measure' c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.12.1/lib/action_controller/benchmarking.rb:69:inperform_action_without_rescue’
c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.12.1/lib/action_controller/rescue.rb:82:in
perform_action' c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.12.1/lib/action_controller/base.rb:381:insend’
c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.12.1/lib/action_controller/base.rb:381:in
process_without_filters' c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.12.1/lib/action_controller/filters.rb:377:inprocess_without_session_management_support’
c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.12.1/lib/action_controller/session_management.rb:117:in
process' c:/ruby/lib/ruby/gems/1.8/gems/rails-1.1.2/lib/dispatcher.rb:38:indispatch’
c:/ruby/lib/ruby/gems/1.8/gems/rails-1.1.2/lib/webrick_server.rb:115:in
handle_dispatch' c:/ruby/lib/ruby/gems/1.8/gems/rails-1.1.2/lib/webrick_server.rb:81:inservice’
c:/ruby/lib/ruby/1.8/webrick/httpserver.rb:104:in service' c:/ruby/lib/ruby/1.8/webrick/httpserver.rb:65:inrun’
c:/ruby/lib/ruby/1.8/webrick/server.rb:155:in start_thread' c:/ruby/lib/ruby/1.8/webrick/server.rb:144:instart’
c:/ruby/lib/ruby/1.8/webrick/server.rb:144:in start_thread' c:/ruby/lib/ruby/1.8/webrick/server.rb:94:instart’
c:/ruby/lib/ruby/1.8/webrick/server.rb:89:in each' c:/ruby/lib/ruby/1.8/webrick/server.rb:89:instart’
c:/ruby/lib/ruby/1.8/webrick/server.rb:79:in start' c:/ruby/lib/ruby/1.8/webrick/server.rb:79:instart’
c:/ruby/lib/ruby/gems/1.8/gems/rails-1.1.2/lib/webrick_server.rb:67:in
dispatch' c:/ruby/lib/ruby/gems/1.8/gems/rails-1.1.2/lib/commands/servers/webrick.rb:59 c:/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:21:inrequire__’
c:/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:21:in
require' c:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.3.1/lib/active_support/dependencies.rb:147:inrequire’
c:/ruby/lib/ruby/gems/1.8/gems/rails-1.1.2/lib/commands/server.rb:30
c:/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:21:in
require__' c:/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:21:inrequire’
c:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.3.1/lib/active_support/dependencies.rb:147:in
require' script/server:3c:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.3.1/lib/active_support/dependencies.rb:123:inconst_missing’
c:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.3.1/lib/active_support/dependencies.rb:131:in
const_missing' c:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.3.1/lib/active_support/inflector.rb:161:inmodule_eval’
c:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.3.1/lib/active_support/inflector.rb:161:in
module_eval' c:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.3.1/lib/active_support/inflector.rb:161:inconstantize’
c:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.3.1/lib/active_support/core_ext/string/inflections.rb:59:in
constantize' c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.12.1/lib/action_controller/pagination.rb:194:inpaginator_and_collection_for’
c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.12.1/lib/action_controller/pagination.rb:129:in
paginate' #{RAILS_ROOT}/app/controllers/admin_controller.rb:12:inlist’
c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.12.1/lib/action_controller/base.rb:910:in
send' c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.12.1/lib/action_controller/base.rb:910:inperform_action_without_filters’
c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.12.1/lib/action_controller/filters.rb:368:in
perform_action_without_benchmark' c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.12.1/lib/action_controller/benchmarking.rb:69:inperform_action_without_rescue’
c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.12.1/lib/action_controller/benchmarking.rb:69:in
measure' c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.12.1/lib/action_controller/benchmarking.rb:69:inperform_action_without_rescue’
c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.12.1/lib/action_controller/rescue.rb:82:in
perform_action' c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.12.1/lib/action_controller/base.rb:381:insend’
c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.12.1/lib/action_controller/base.rb:381:in
process_without_filters' c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.12.1/lib/action_controller/filters.rb:377:inprocess_without_session_management_support’
c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.12.1/lib/action_controller/session_management.rb:117:in
process' c:/ruby/lib/ruby/gems/1.8/gems/rails-1.1.2/lib/dispatcher.rb:38:indispatch’
c:/ruby/lib/ruby/gems/1.8/gems/rails-1.1.2/lib/webrick_server.rb:115:in
handle_dispatch' c:/ruby/lib/ruby/gems/1.8/gems/rails-1.1.2/lib/webrick_server.rb:81:inservice’
c:/ruby/lib/ruby/1.8/webrick/httpserver.rb:104:in service' c:/ruby/lib/ruby/1.8/webrick/httpserver.rb:65:inrun’
c:/ruby/lib/ruby/1.8/webrick/server.rb:155:in start_thread' c:/ruby/lib/ruby/1.8/webrick/server.rb:144:instart’
c:/ruby/lib/ruby/1.8/webrick/server.rb:144:in start_thread' c:/ruby/lib/ruby/1.8/webrick/server.rb:94:instart’
c:/ruby/lib/ruby/1.8/webrick/server.rb:89:in each' c:/ruby/lib/ruby/1.8/webrick/server.rb:89:instart’
c:/ruby/lib/ruby/1.8/webrick/server.rb:79:in start' c:/ruby/lib/ruby/1.8/webrick/server.rb:79:instart’
c:/ruby/lib/ruby/gems/1.8/gems/rails-1.1.2/lib/webrick_server.rb:67:in
dispatch' c:/ruby/lib/ruby/gems/1.8/gems/rails-1.1.2/lib/commands/servers/webrick.rb:59 c:/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:21:inrequire__’
c:/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:21:in
require' c:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.3.1/lib/active_support/dependencies.rb:147:inrequire’
c:/ruby/lib/ruby/gems/1.8/gems/rails-1.1.2/lib/commands/server.rb:30
c:/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:21:in
require__' c:/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:21:inrequire’
c:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.3.1/lib/active_support/dependencies.rb:147:in
require' script/server:3 -e:3:inload’
-e:3This error occured while loading the following files:
subject.rbRe

Is subject.rb a model file?

Does it have a correct first line?

class Subject < ActiveRecord::Base

Peter

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