Airbrake social stream error

gistfile1.irclog

/Users/username/.rvm/gems/ruby-1.9.3-p0@Project/bundler/gems/social_stream-b3739bfc7dbf/base/lib/social_stream/models/subject.rb:32:in `block in <module:Subject>': undefined method `alphabetic' for Actor:Class (NoMethodError)
  from /Users/username/.rvm/gems/ruby-1.9.3-p0@Project/gems/activesupport-3.2.8/lib/active_support/concern.rb:119:in `class_eval'
  from /Users/username/.rvm/gems/ruby-1.9.3-p0@Project/gems/activesupport-3.2.8/lib/active_support/concern.rb:119:in `append_features'
  from /Users/username/Code/Rails/Project/app/models/user.rb:4:in `include'
  from /Users/username/Code/Rails/Project/app/models/user.rb:4:in `<class:User>'
  from /Users/username/Code/Rails/Project/app/models/user.rb:1:in `<top (required)>'
  from /Users/username/.rvm/gems/ruby-1.9.3-p0@Project/gems/zeus-0.12.0/lib/zeus/load_tracking.rb:50:in `load'
  from /Users/username/.rvm/gems/ruby-1.9.3-p0@Project/gems/zeus-0.12.0/lib/zeus/load_tracking.rb:50:in `load'
  from /Users/username/.rvm/gems/ruby-1.9.3-p0@Project/gems/activesupport-3.2.8/lib/active_support/dependencies.rb:469:in `block in load_file'
  from /Users/username/.rvm/gems/ruby-1.9.3-p0@Project/gems/activesupport-3.2.8/lib/active_support/dependencies.rb:639:in `new_constants_in'
  from /Users/username/.rvm/gems/ruby-1.9.3-p0@Project/gems/activesupport-3.2.8/lib/active_support/dependencies.rb:468:in `load_file'
  from /Users/username/.rvm/gems/ruby-1.9.3-p0@Project/gems/activesupport-3.2.8/lib/active_support/dependencies.rb:353:in `require_or_load'
  from /Users/username/.rvm/gems/ruby-1.9.3-p0@Project/gems/activesupport-3.2.8/lib/active_support/dependencies.rb:502:in `load_missing_constant'
  from /Users/username/.rvm/gems/ruby-1.9.3-p0@Project/gems/activesupport-3.2.8/lib/active_support/dependencies.rb:192:in `block in const_missing'
  from /Users/username/.rvm/gems/ruby-1.9.3-p0@Project/gems/activesupport-3.2.8/lib/active_support/dependencies.rb:190:in `each'
  from /Users/username/.rvm/gems/ruby-1.9.3-p0@Project/gems/activesupport-3.2.8/lib/active_support/dependencies.rb:190:in `const_missing'
  from /Users/username/.rvm/gems/ruby-1.9.3-p0@Project/gems/rake-0.9.2.2/lib/rake/ext/module.rb:36:in `const_missing'
  from /Users/username/.rvm/gems/ruby-1.9.3-p0@Project/gems/activesupport-3.2.8/lib/active_support/dependencies.rb:514:in `load_missing_constant'
  from /Users/username/.rvm/gems/ruby-1.9.3-p0@Project/gems/activesupport-3.2.8/lib/active_support/dependencies.rb:192:in `block in const_missing'
  from /Users/username/.rvm/gems/ruby-1.9.3-p0@Project/gems/activesupport-3.2.8/lib/active_support/dependencies.rb:190:in `each'
  from /Users/username/.rvm/gems/ruby-1.9.3-p0@Project/gems/activesupport-3.2.8/lib/active_support/dependencies.rb:190:in `const_missing'
  from /Users/username/.rvm/gems/ruby-1.9.3-p0@Project/gems/rake-0.9.2.2/lib/rake/ext/module.rb:36:in `const_missing'
  from /Users/username/.rvm/gems/ruby-1.9.3-p0@Project/gems/activesupport-3.2.8/lib/active_support/inflector/methods.rb:230:in `block in constantize'
  from /Users/username/.rvm/gems/ruby-1.9.3-p0@Project/gems/activesupport-3.2.8/lib/active_support/inflector/methods.rb:229:in `each'
  from /Users/username/.rvm/gems/ruby-1.9.3-p0@Project/gems/activesupport-3.2.8/lib/active_support/inflector/methods.rb:229:in `constantize'
  from /Users/username/.rvm/gems/ruby-1.9.3-p0@Project/gems/activesupport-3.2.8/lib/active_support/dependencies.rb:554:in `get'
  from /Users/username/.rvm/gems/ruby-1.9.3-p0@Project/gems/activesupport-3.2.8/lib/active_support/dependencies.rb:588:in `constantize'
  from /Users/username/.rvm/gems/ruby-1.9.3-p0@Project/gems/activerecord-3.2.8/lib/active_record/inheritance.rb:103:in `block in compute_type'
  from /Users/username/.rvm/gems/ruby-1.9.3-p0@Project/gems/activerecord-3.2.8/lib/active_record/inheritance.rb:101:in `each'
  from /Users/username/.rvm/gems/ruby-1.9.3-p0@Project/gems/activerecord-3.2.8/lib/active_record/inheritance.rb:101:in `compute_type'
  from /Users/username/.rvm/gems/ruby-1.9.3-p0@Project/gems/activerecord-3.2.8/lib/active_record/reflection.rb:172:in `klass'
  from /Users/username/.rvm/gems/ruby-1.9.3-p0@Project/gems/rails_admin-0.0.5/lib/rails_admin/adapters/active_record.rb:224:in `association_model_lookup'
  from /Users/username/.rvm/gems/ruby-1.9.3-p0@Project/gems/rails_admin-0.0.5/lib/rails_admin/adapters/active_record.rb:69:in `block (2 levels) in associations'
  from /Users/username/.rvm/gems/ruby-1.9.3-p0@Project/gems/rails_admin-0.0.5/lib/rails_admin/config/fields/association.rb:64:in `call'
  from /Users/username/.rvm/gems/ruby-1.9.3-p0@Project/gems/rails_admin-0.0.5/lib/rails_admin/config/fields/association.rb:64:in `associated_model_config'
  from /Users/username/.rvm/gems/ruby-1.9.3-p0@Project/gems/rails_admin-0.0.5/lib/rails_admin/config/fields/association.rb:34:in `block in <class:Association>'
  from /Users/username/.rvm/gems/ruby-1.9.3-p0@Project/gems/rails_admin-0.0.5/lib/rails_admin/config/configurable.rb:68:in `instance_eval'
  from /Users/username/.rvm/gems/ruby-1.9.3-p0@Project/gems/rails_admin-0.0.5/lib/rails_admin/config/configurable.rb:68:in `block in register_instance_option'
  from /Users/username/.rvm/gems/ruby-1.9.3-p0@Project/gems/rails_admin-0.0.5/lib/rails_admin/config/hideable.rb:14:in `hidden?'
  from /Users/username/.rvm/gems/ruby-1.9.3-p0@Project/gems/activesupport-3.2.8/lib/active_support/core_ext/object/try.rb:36:in `try'
  from /Users/username/.rvm/gems/ruby-1.9.3-p0@Project/gems/rails_admin-0.0.5/lib/rails_admin/config/has_fields.rb:11:in `field'
  from /Users/username/.rvm/gems/ruby-1.9.3-p0@Project/gems/rails_admin-0.0.5/lib/rails_admin/config/model.rb:84:in `method_missing'
  from /Users/username/Code/Rails/Project/config/initializers/rails_admin.rb:53:in `block (2 levels) in <top (required)>'
  from /Users/username/.rvm/gems/ruby-1.9.3-p0@Project/gems/rails_admin-0.0.5/lib/rails_admin/config.rb:241:in `instance_eval'
  from /Users/username/.rvm/gems/ruby-1.9.3-p0@Project/gems/rails_admin-0.0.5/lib/rails_admin/config.rb:241:in `model'
  from /Users/username/Code/Rails/Project/config/initializers/rails_admin.rb:33:in `block in <top (required)>'
  from /Users/username/.rvm/gems/ruby-1.9.3-p0@Project/gems/rails_admin-0.0.5/lib/rails_admin.rb:29:in `call'
  from /Users/username/.rvm/gems/ruby-1.9.3-p0@Project/gems/rails_admin-0.0.5/lib/rails_admin.rb:29:in `config'
  from /Users/username/Code/Rails/Project/config/initializers/rails_admin.rb:1:in `<top (required)>'
  from /Users/username/.rvm/gems/ruby-1.9.3-p0@Project/gems/zeus-0.12.0/lib/zeus/load_tracking.rb:50:in `load'
  from /Users/username/.rvm/gems/ruby-1.9.3-p0@Project/gems/zeus-0.12.0/lib/zeus/load_tracking.rb:50:in `load'
  from /Users/username/.rvm/gems/ruby-1.9.3-p0@Project/gems/zeus-0.12.0/lib/zeus/load_tracking.rb:43:in `load'
  from /Users/username/.rvm/gems/ruby-1.9.3-p0@Project/gems/activesupport-3.2.8/lib/active_support/dependencies.rb:245:in `block in load'
  from /Users/username/.rvm/gems/ruby-1.9.3-p0@Project/gems/activesupport-3.2.8/lib/active_support/dependencies.rb:236:in `load_dependency'
  from /Users/username/.rvm/gems/ruby-1.9.3-p0@Project/gems/activesupport-3.2.8/lib/active_support/dependencies.rb:245:in `load'
  from /Users/username/.rvm/gems/ruby-1.9.3-p0@Project/gems/railties-3.2.8/lib/rails/engine.rb:588:in `block (2 levels) in <class:Engine>'
  from /Users/username/.rvm/gems/ruby-1.9.3-p0@Project/gems/railties-3.2.8/lib/rails/engine.rb:587:in `each'
  from /Users/username/.rvm/gems/ruby-1.9.3-p0@Project/gems/railties-3.2.8/lib/rails/engine.rb:587:in `block in <class:Engine>'
  from /Users/username/.rvm/gems/ruby-1.9.3-p0@Project/gems/railties-3.2.8/lib/rails/initializable.rb:30:in `instance_exec'
  from /Users/username/.rvm/gems/ruby-1.9.3-p0@Project/gems/railties-3.2.8/lib/rails/initializable.rb:30:in `run'
  from /Users/username/.rvm/gems/ruby-1.9.3-p0@Project/gems/railties-3.2.8/lib/rails/initializable.rb:55:in `block in run_initializers'
  from /Users/username/.rvm/gems/ruby-1.9.3-p0@Project/gems/railties-3.2.8/lib/rails/initializable.rb:54:in `each'
  from /Users/username/.rvm/gems/ruby-1.9.3-p0@Project/gems/railties-3.2.8/lib/rails/initializable.rb:54:in `run_initializers'
  from /Users/username/.rvm/gems/ruby-1.9.3-p0@Project/gems/railties-3.2.8/lib/rails/application.rb:136:in `initialize!'
  from /Users/username/.rvm/gems/ruby-1.9.3-p0@Project/gems/railties-3.2.8/lib/rails/railtie/configurable.rb:30:in `method_missing'
  from /Users/username/Code/Rails/Project/config/environment.rb:5:in `<top (required)>'
  from /Users/username/.rvm/gems/ruby-1.9.3-p0@Project/gems/activesupport-3.2.8/lib/active_support/dependencies.rb:251:in `require'
  from /Users/username/.rvm/gems/ruby-1.9.3-p0@Project/gems/activesupport-3.2.8/lib/active_support/dependencies.rb:251:in `block in require'
  from /Users/username/.rvm/gems/ruby-1.9.3-p0@Project/gems/activesupport-3.2.8/lib/active_support/dependencies.rb:236:in `load_dependency'
  from /Users/username/.rvm/gems/ruby-1.9.3-p0@Project/gems/activesupport-3.2.8/lib/active_support/dependencies.rb:251:in `require'
  from /Users/username/Code/Rails/Project/config.ru:4:in `block in <main>'
  from /Users/username/.rvm/gems/ruby-1.9.3-p0@Project/gems/rack-1.4.1/lib/rack/builder.rb:51:in `instance_eval'
  from /Users/username/.rvm/gems/ruby-1.9.3-p0@Project/gems/rack-1.4.1/lib/rack/builder.rb:51:in `initialize'
  from /Users/username/Code/Rails/Project/config.ru:1:in `new'
  from /Users/username/Code/Rails/Project/config.ru:1:in `<main>'
  from /Users/username/.rvm/gems/ruby-1.9.3-p0@Project/gems/rack-1.4.1/lib/rack/builder.rb:40:in `eval'
  from /Users/username/.rvm/gems/ruby-1.9.3-p0@Project/gems/rack-1.4.1/lib/rack/builder.rb:40:in `parse_file'
  from /Users/username/.rvm/gems/ruby-1.9.3-p0@Project/gems/rack-1.4.1/lib/rack/server.rb:200:in `app'
  from /Users/username/.rvm/gems/ruby-1.9.3-p0@Project/gems/railties-3.2.8/lib/rails/commands/server.rb:46:in `app'
  from /Users/username/.rvm/gems/ruby-1.9.3-p0@Project/gems/rack-1.4.1/lib/rack/server.rb:301:in `wrapped_app'
  from /Users/username/.rvm/gems/ruby-1.9.3-p0@Project/gems/rack-1.4.1/lib/rack/server.rb:252:in `start'
  from /Users/username/.rvm/gems/ruby-1.9.3-p0@Project/gems/railties-3.2.8/lib/rails/commands/server.rb:70:in `start'
  from /Users/username/.rvm/gems/ruby-1.9.3-p0@Project/gems/railties-3.2.8/lib/rails/commands.rb:55:in `block in <top (required)>'
  from /Users/username/.rvm/gems/ruby-1.9.3-p0@Project/gems/railties-3.2.8/lib/rails/commands.rb:50:in `tap'
  from /Users/username/.rvm/gems/ruby-1.9.3-p0@Project/gems/railties-3.2.8/lib/rails/commands.rb:50:in `<top (required)>'
  from script/rails:6:in `require'
  from script/rails:6:in `<main>'