# Error i cant figure out, only on my local machine **URL:** \ **Category:** Rails\ **Created:** [September 22, 2007, 10:43pm UTC](https://www.ruby-forum.com/t/error-i-cant-figure-out-only-on-my-local-machine/115267 "2007-09-22T22:43:41Z")\ **Posts on this page:** 1\ **Page:** 1
**Author:** ![inari](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/i/838e76/32.png) [@inari](https://www.ruby-forum.com/u/inari)\ **Post date:** [September 22, 2007, 10:43pm UTC](https://www.ruby-forum.com/t/error-i-cant-figure-out-only-on-my-local-machine/115267/1 "2007-09-22T22:43:41Z")
after svn update of our development server i get this error when trying to use the app (db:migrate goes without a hitch). the svn update is working fine on my other computer. its just here, heres the error: ActiveRecord::SubclassNotFound in UsersController#create The single-table inheritance mechanism failed to locate the subclass: ‘user’. This error is raised because the column ‘type’ is reserved for storing the class in case of inheritance. Please rename this column if you didn’t intend it to be used for storing the inheritance class or overwrite User.inheritance\_column to use another column for that information i did a full trace on it and this is what comes up. RAILS\_ROOT: script/…/config/… Application Trace | Framework Trace | Full Trace vendor/rails/activerecord/lib/active\_record/base.rb:1068:in `instantiate_without_callbacks’ vendor/rails/activerecord/lib/active_record/callbacks.rb:204:in`instantiate’ vendor/rails/activerecord/lib/active\_record/base.rb:427:in `find_by_sql’ vendor/rails/activerecord/lib/active_record/base.rb:427:in`collect!’ vendor/rails/activerecord/lib/active\_record/base.rb:427:in `find_by_sql’ vendor/rails/activerecord/lib/active_record/base.rb:997:in`find\_every’ vendor/rails/activerecord/lib/active\_record/base.rb:991:in `find_initial’ vendor/rails/activerecord/lib/active_record/base.rb:417:in`find’ vendor/rails/activerecord/lib/active\_record/validations.rb:551:in `validates_uniqueness_of’ vendor/rails/activerecord/lib/active_record/validations.rb:302:in`validates\_each’ vendor/rails/activerecord/lib/active\_record/validations.rb:299:in `each’ vendor/rails/activerecord/lib/active_record/validations.rb:299:in`validates\_each’ vendor/rails/activerecord/lib/active\_record/validations.rb:822:in `call’ vendor/rails/activerecord/lib/active_record/validations.rb:822:in`run\_validations’ vendor/rails/activerecord/lib/active\_record/validations.rb:816:in `each’ vendor/rails/activerecord/lib/active_record/validations.rb:816:in`run\_validations’ vendor/rails/activerecord/lib/active\_record/validations.rb:780:in `valid_without_callbacks?’ vendor/rails/activerecord/lib/active_record/callbacks.rb:299:in`valid\_without\_captcha?’ (eval):4:in `valid?’ (eval):3:in`save\_with\_captcha’ app/controllers/users\_controller.rb:23:in `create’ vendor/rails/activerecord/lib/active\_record/base.rb:1068:in `instantiate_without_callbacks’ vendor/rails/activerecord/lib/active_record/callbacks.rb:204:in`instantiate’ vendor/rails/activerecord/lib/active\_record/base.rb:427:in `find_by_sql’ vendor/rails/activerecord/lib/active_record/base.rb:427:in`collect!’ vendor/rails/activerecord/lib/active\_record/base.rb:427:in `find_by_sql’ vendor/rails/activerecord/lib/active_record/base.rb:997:in`find\_every’ vendor/rails/activerecord/lib/active\_record/base.rb:991:in `find_initial’ vendor/rails/activerecord/lib/active_record/base.rb:417:in`find’ vendor/rails/activerecord/lib/active\_record/validations.rb:551:in `validates_uniqueness_of’ vendor/rails/activerecord/lib/active_record/validations.rb:302:in`validates\_each’ vendor/rails/activerecord/lib/active\_record/validations.rb:299:in `each’ vendor/rails/activerecord/lib/active_record/validations.rb:299:in`validates\_each’ vendor/rails/activerecord/lib/active\_record/validations.rb:822:in `call’ vendor/rails/activerecord/lib/active_record/validations.rb:822:in`run\_validations’ vendor/rails/activerecord/lib/active\_record/validations.rb:816:in `each’ vendor/rails/activerecord/lib/active_record/validations.rb:816:in`run\_validations’ vendor/rails/activerecord/lib/active\_record/validations.rb:780:in `valid_without_callbacks?’ vendor/rails/activerecord/lib/active_record/callbacks.rb:299:in`valid\_without\_captcha?’ vendor/rails/activerecord/lib/active\_record/validations.rb:751:in `save_without_transactions’ vendor/rails/activerecord/lib/active_record/transactions.rb:129:in`save\_without\_captcha’ vendor/rails/activerecord/lib/active\_record/connection\_adapters/abstract/database\_statements.rb:59:in `transaction’ vendor/rails/activerecord/lib/active_record/transactions.rb:95:in`transaction’ vendor/rails/activerecord/lib/active\_record/transactions.rb:121:in `transaction’ vendor/rails/activerecord/lib/active_record/transactions.rb:129:in`save\_without\_captcha’ vendor/rails/actionpack/lib/action\_controller/base.rb:1095:in `send’ vendor/rails/actionpack/lib/action_controller/base.rb:1095:in`perform\_action\_without\_filters’ vendor/rails/actionpack/lib/action\_controller/filters.rb:632:in `call_filter’ vendor/rails/actionpack/lib/action_controller/filters.rb:634:in`call\_filter’ vendor/rails/actionpack/lib/action\_controller/filters.rb:619:in `perform_action_without_benchmark’ vendor/rails/actionpack/lib/action_controller/benchmarking.rb:66:in`perform\_action\_without\_rescue’ /usr/local/lib/ruby/1.8/benchmark.rb:293:in `measure’ vendor/rails/actionpack/lib/action_controller/benchmarking.rb:66:in`perform\_action\_without\_rescue’ vendor/rails/actionpack/lib/action\_controller/rescue.rb:83:in `perform_action’ vendor/rails/actionpack/lib/action_controller/base.rb:430:in`send’ vendor/rails/actionpack/lib/action\_controller/base.rb:430:in `process_without_filters’ vendor/rails/actionpack/lib/action_controller/filters.rb:624:in`process\_without\_session\_management\_support’ vendor/rails/actionpack/lib/action\_controller/session\_management.rb:114:in `process’ vendor/rails/actionpack/lib/action_controller/base.rb:330:in`process’ vendor/rails/railties/lib/dispatcher.rb:41:in `dispatch’ /usr/local/lib/ruby/gems/1.8/gems/mongrel-1.0.1/lib/mongrel/rails.rb:78:in`process’ /usr/local/lib/ruby/gems/1.8/gems/mongrel-1.0.1/lib/mongrel/rails.rb:76:in `synchronize’ /usr/local/lib/ruby/gems/1.8/gems/mongrel-1.0.1/lib/mongrel/rails.rb:76:in`process’ /usr/local/lib/ruby/gems/1.8/gems/mongrel-1.0.1/lib/mongrel.rb:618:in `process_client’ /usr/local/lib/ruby/gems/1.8/gems/mongrel-1.0.1/lib/mongrel.rb:617:in`each’ /usr/local/lib/ruby/gems/1.8/gems/mongrel-1.0.1/lib/mongrel.rb:617:in `process_client’ /usr/local/lib/ruby/gems/1.8/gems/mongrel-1.0.1/lib/mongrel.rb:736:in`run’ /usr/local/lib/ruby/gems/1.8/gems/mongrel-1.0.1/lib/mongrel.rb:736:in `initialize’ /usr/local/lib/ruby/gems/1.8/gems/mongrel-1.0.1/lib/mongrel.rb:736:in`new’ /usr/local/lib/ruby/gems/1.8/gems/mongrel-1.0.1/lib/mongrel.rb:736:in `run’ /usr/local/lib/ruby/gems/1.8/gems/mongrel-1.0.1/lib/mongrel.rb:720:in`initialize’ /usr/local/lib/ruby/gems/1.8/gems/mongrel-1.0.1/lib/mongrel.rb:720:in `new’ /usr/local/lib/ruby/gems/1.8/gems/mongrel-1.0.1/lib/mongrel.rb:720:in`run’ /usr/local/lib/ruby/gems/1.8/gems/mongrel-1.0.1/lib/mongrel/configurator.rb:271:in `run’ /usr/local/lib/ruby/gems/1.8/gems/mongrel-1.0.1/lib/mongrel/configurator.rb:270:in`each’ /usr/local/lib/ruby/gems/1.8/gems/mongrel-1.0.1/lib/mongrel/configurator.rb:270:in `run’ /usr/local/lib/ruby/gems/1.8/gems/mongrel-1.0.1/bin/mongrel_rails:127:in`run’ /usr/local/lib/ruby/gems/1.8/gems/mongrel-1.0.1/lib/mongrel/command.rb:211:in `run’ /usr/local/lib/ruby/gems/1.8/gems/mongrel-1.0.1/bin/mongrel_rails:243 vendor/rails/activesupport/lib/active_support/dependencies.rb:488:in`load’ vendor/rails/activesupport/lib/active\_support/dependencies.rb:488:in `load’ vendor/rails/activesupport/lib/active_support/dependencies.rb:342:in`new\_constants\_in’ vendor/rails/activesupport/lib/active\_support/dependencies.rb:488:in `load’ vendor/rails/railties/lib/commands/servers/mongrel.rb:60 /usr/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in`gem\_original\_require’ /usr/local/lib/ruby/site\_ruby/1.8/rubygems/custom\_require.rb:27:in `require’ vendor/rails/activesupport/lib/active_support/dependencies.rb:495:in`require’ vendor/rails/activesupport/lib/active\_support/dependencies.rb:342:in `new_constants_in’ vendor/rails/activesupport/lib/active_support/dependencies.rb:495:in`require’ vendor/rails/railties/lib/commands/server.rb:39 script/server:3:in `require’ script/server:3 vendor/rails/activerecord/lib/active\_record/base.rb:1068:in `instantiate_without_callbacks’ vendor/rails/activerecord/lib/active_record/callbacks.rb:204:in`instantiate’ vendor/rails/activerecord/lib/active\_record/base.rb:427:in `find_by_sql’ vendor/rails/activerecord/lib/active_record/base.rb:427:in`collect!’ vendor/rails/activerecord/lib/active\_record/base.rb:427:in `find_by_sql’ vendor/rails/activerecord/lib/active_record/base.rb:997:in`find\_every’ vendor/rails/activerecord/lib/active\_record/base.rb:991:in `find_initial’ vendor/rails/activerecord/lib/active_record/base.rb:417:in`find’ vendor/rails/activerecord/lib/active\_record/validations.rb:551:in `validates_uniqueness_of’ vendor/rails/activerecord/lib/active_record/validations.rb:302:in`validates\_each’ vendor/rails/activerecord/lib/active\_record/validations.rb:299:in `each’ vendor/rails/activerecord/lib/active_record/validations.rb:299:in`validates\_each’ vendor/rails/activerecord/lib/active\_record/validations.rb:822:in `call’ vendor/rails/activerecord/lib/active_record/validations.rb:822:in`run\_validations’ vendor/rails/activerecord/lib/active\_record/validations.rb:816:in `each’ vendor/rails/activerecord/lib/active_record/validations.rb:816:in`run\_validations’ vendor/rails/activerecord/lib/active\_record/validations.rb:780:in `valid_without_callbacks?’ vendor/rails/activerecord/lib/active_record/callbacks.rb:299:in`valid\_without\_captcha?’ (eval):4:in `valid?’ vendor/rails/activerecord/lib/active_record/validations.rb:751:in`save\_without\_transactions’ vendor/rails/activerecord/lib/active\_record/transactions.rb:129:in `save_without_captcha’ vendor/rails/activerecord/lib/active_record/connection_adapters/abstract/database_statements.rb:59:in`transaction’ vendor/rails/activerecord/lib/active\_record/transactions.rb:95:in `transaction’ vendor/rails/activerecord/lib/active_record/transactions.rb:121:in`transaction’ vendor/rails/activerecord/lib/active\_record/transactions.rb:129:in `save_without_captcha’ (eval):3:in`save\_with\_captcha’ app/controllers/users\_controller.rb:23:in `create’ vendor/rails/actionpack/lib/action_controller/base.rb:1095:in`send’ vendor/rails/actionpack/lib/action\_controller/base.rb:1095:in `perform_action_without_filters’ vendor/rails/actionpack/lib/action_controller/filters.rb:632:in`call\_filter’ vendor/rails/actionpack/lib/action\_controller/filters.rb:634:in `call_filter’ vendor/rails/actionpack/lib/action_controller/filters.rb:619:in`perform\_action\_without\_benchmark’ vendor/rails/actionpack/lib/action\_controller/benchmarking.rb:66:in `perform_action_without_rescue’ /usr/local/lib/ruby/1.8/benchmark.rb:293:in`measure’ vendor/rails/actionpack/lib/action\_controller/benchmarking.rb:66:in `perform_action_without_rescue’ vendor/rails/actionpack/lib/action_controller/rescue.rb:83:in`perform\_action’ vendor/rails/actionpack/lib/action\_controller/base.rb:430:in `send’ vendor/rails/actionpack/lib/action_controller/base.rb:430:in`process\_without\_filters’ vendor/rails/actionpack/lib/action\_controller/filters.rb:624:in `process_without_session_management_support’ vendor/rails/actionpack/lib/action_controller/session_management.rb:114:in`process’ vendor/rails/actionpack/lib/action\_controller/base.rb:330:in `process’ vendor/rails/railties/lib/dispatcher.rb:41:in`dispatch’ /usr/local/lib/ruby/gems/1.8/gems/mongrel-1.0.1/lib/mongrel/rails.rb:78:in `process’ /usr/local/lib/ruby/gems/1.8/gems/mongrel-1.0.1/lib/mongrel/rails.rb:76:in`synchronize’ /usr/local/lib/ruby/gems/1.8/gems/mongrel-1.0.1/lib/mongrel/rails.rb:76:in `process’ /usr/local/lib/ruby/gems/1.8/gems/mongrel-1.0.1/lib/mongrel.rb:618:in`process\_client’ /usr/local/lib/ruby/gems/1.8/gems/mongrel-1.0.1/lib/mongrel.rb:617:in `each’ /usr/local/lib/ruby/gems/1.8/gems/mongrel-1.0.1/lib/mongrel.rb:617:in`process\_client’ /usr/local/lib/ruby/gems/1.8/gems/mongrel-1.0.1/lib/mongrel.rb:736:in `run’ /usr/local/lib/ruby/gems/1.8/gems/mongrel-1.0.1/lib/mongrel.rb:736:in`initialize’ /usr/local/lib/ruby/gems/1.8/gems/mongrel-1.0.1/lib/mongrel.rb:736:in `new’ /usr/local/lib/ruby/gems/1.8/gems/mongrel-1.0.1/lib/mongrel.rb:736:in`run’ /usr/local/lib/ruby/gems/1.8/gems/mongrel-1.0.1/lib/mongrel.rb:720:in `initialize’ /usr/local/lib/ruby/gems/1.8/gems/mongrel-1.0.1/lib/mongrel.rb:720:in`new’ /usr/local/lib/ruby/gems/1.8/gems/mongrel-1.0.1/lib/mongrel.rb:720:in `run’ /usr/local/lib/ruby/gems/1.8/gems/mongrel-1.0.1/lib/mongrel/configurator.rb:271:in`run’ /usr/local/lib/ruby/gems/1.8/gems/mongrel-1.0.1/lib/mongrel/configurator.rb:270:in `each’ /usr/local/lib/ruby/gems/1.8/gems/mongrel-1.0.1/lib/mongrel/configurator.rb:270:in`run’ /usr/local/lib/ruby/gems/1.8/gems/mongrel-1.0.1/bin/mongrel\_rails:127:in `run’ /usr/local/lib/ruby/gems/1.8/gems/mongrel-1.0.1/lib/mongrel/command.rb:211:in`run’ /usr/local/lib/ruby/gems/1.8/gems/mongrel-1.0.1/bin/mongrel\_rails:243 vendor/rails/activesupport/lib/active\_support/dependencies.rb:488:in `load’ vendor/rails/activesupport/lib/active_support/dependencies.rb:488:in`load’ vendor/rails/activesupport/lib/active\_support/dependencies.rb:342:in `new_constants_in’ vendor/rails/activesupport/lib/active_support/dependencies.rb:488:in`load’ vendor/rails/railties/lib/commands/servers/mongrel.rb:60 /usr/local/lib/ruby/site\_ruby/1.8/rubygems/custom\_require.rb:27:in `gem_original_require’ /usr/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in`require’ vendor/rails/activesupport/lib/active\_support/dependencies.rb:495:in `require’ vendor/rails/activesupport/lib/active_support/dependencies.rb:342:in`new\_constants\_in’ vendor/rails/activesupport/lib/active\_support/dependencies.rb:495:in `require’ vendor/rails/railties/lib/commands/server.rb:39 script/server:3:in`require’ script/server:3