## migrations
class CreateProjects < ActiveRecord::Migration
  def self.up
    create_table :projects do |t|
      t.string :name
      t.references :project_status

      t.timestamps
    end
  end

  def self.down
    drop_table :projects
  end
end

class CreateProjectStatuses < ActiveRecord::Migration
  def self.up
    create_table :project_statuses do |t|
      t.string :name
      t.string :abbreviation

      t.timestamps
    end
  end

  def self.down
    drop_table :project_statuses
  end
end

## error
Expected C:/Aptana_Studio/chklist_manager/app/models/project_status.rb to define Project_status

##scaffold lines
Project name:string project_status:references

Project_status name:string abbreviation:string

## project_status.rb
class ProjectStatus < ActiveRecord::Base

end

## migration trace

C:\Aptana_Studio\chklist_manager>rake db:migrate --trace
(in C:/Aptana_Studio/chklist_manager)
** Invoke db:migrate (first_time)
** Invoke environment (first_time)
** Execute environment
** Execute db:migrate
== 1 CreateProjects: migrating ================================================
-- create_table(:projects)
   -> 0.0620s
== 1 CreateProjects: migrated (0.0620s) =======================================

== 2 CreateProjectStatuses: migrating =========================================
-- create_table(:project_statuses)
   -> 0.0620s
rake aborted!
Expected C:/Aptana_Studio/chklist_manager/app/models/project_status.rb to define Project_status
c:/ruby/lib/ruby/gems/1.8/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:249:in `load_missing_constant'
c:/ruby/lib/ruby/gems/1.8/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:453:in `const_missing'
c:/ruby/lib/ruby/gems/1.8/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:465:in `const_missing'
c:/ruby/lib/ruby/gems/1.8/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:260:in `load_missing_constant'
c:/ruby/lib/ruby/gems/1.8/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:469:in `const_missing'
./db/migrate//002_create_project_statuses.rb:11:in `up_without_benchmarks'
c:/ruby/lib/ruby/gems/1.8/gems/activerecord-2.0.2/lib/active_record/migration.rb:219:in `send'
c:/ruby/lib/ruby/gems/1.8/gems/activerecord-2.0.2/lib/active_record/migration.rb:219:in `migrate'
c:/ruby/lib/ruby/1.8/benchmark.rb:293:in `measure'
c:/ruby/lib/ruby/gems/1.8/gems/activerecord-2.0.2/lib/active_record/migration.rb:219:in `migrate'
c:/ruby/lib/ruby/gems/1.8/gems/activerecord-2.0.2/lib/active_record/migration.rb:348:in `migrate'
c:/ruby/lib/ruby/gems/1.8/gems/activerecord-2.0.2/lib/active_record/migration.rb:339:in `each'
c:/ruby/lib/ruby/gems/1.8/gems/activerecord-2.0.2/lib/active_record/migration.rb:339:in `migrate'
c:/ruby/lib/ruby/gems/1.8/gems/activerecord-2.0.2/lib/active_record/migration.rb:307:in `up'
c:/ruby/lib/ruby/gems/1.8/gems/activerecord-2.0.2/lib/active_record/migration.rb:298:in `migrate'
c:/ruby/lib/ruby/gems/1.8/gems/rails-2.0.2/lib/tasks/databases.rake:85
c:/ruby/lib/ruby/gems/1.8/gems/rake-0.8.1/lib/rake.rb:546:in `call'
c:/ruby/lib/ruby/gems/1.8/gems/rake-0.8.1/lib/rake.rb:546:in `execute'
c:/ruby/lib/ruby/gems/1.8/gems/rake-0.8.1/lib/rake.rb:541:in `each'
c:/ruby/lib/ruby/gems/1.8/gems/rake-0.8.1/lib/rake.rb:541:in `execute'
c:/ruby/lib/ruby/gems/1.8/gems/rake-0.8.1/lib/rake.rb:508:in `invoke_with_call_chain'
c:/ruby/lib/ruby/gems/1.8/gems/rake-0.8.1/lib/rake.rb:501:in `synchronize'
c:/ruby/lib/ruby/gems/1.8/gems/rake-0.8.1/lib/rake.rb:501:in `invoke_with_call_chain'
c:/ruby/lib/ruby/gems/1.8/gems/rake-0.8.1/lib/rake.rb:494:in `invoke'
c:/ruby/lib/ruby/gems/1.8/gems/rake-0.8.1/lib/rake.rb:1931:in `invoke_task'
c:/ruby/lib/ruby/gems/1.8/gems/rake-0.8.1/lib/rake.rb:1909:in `top_level'
c:/ruby/lib/ruby/gems/1.8/gems/rake-0.8.1/lib/rake.rb:1909:in `each'
c:/ruby/lib/ruby/gems/1.8/gems/rake-0.8.1/lib/rake.rb:1909:in `top_level'
c:/ruby/lib/ruby/gems/1.8/gems/rake-0.8.1/lib/rake.rb:1948:in `standard_exception_handling'
c:/ruby/lib/ruby/gems/1.8/gems/rake-0.8.1/lib/rake.rb:1903:in `top_level'
c:/ruby/lib/ruby/gems/1.8/gems/rake-0.8.1/lib/rake.rb:1881:in `run'
c:/ruby/lib/ruby/gems/1.8/gems/rake-0.8.1/lib/rake.rb:1948:in `standard_exception_handling'
c:/ruby/lib/ruby/gems/1.8/gems/rake-0.8.1/lib/rake.rb:1878:in `run'
c:/ruby/lib/ruby/gems/1.8/gems/rake-0.8.1/bin/rake:31
c:/ruby/bin/rake:16:in `load'
c:/ruby/bin/rake:16