railsしりとり scaffoldでつまづく

SHOKAI-MAG /home/sho/src/shiritori% ./script/generate scaffold word
      exists  app/models/
      exists  app/controllers/
      exists  app/helpers/
      create  app/views/words
      exists  app/views/layouts/
      exists  test/functional/
      exists  test/unit/
      create  app/views/words/index.html.erb
      create  app/views/words/show.html.erb
      create  app/views/words/new.html.erb
      create  app/views/words/edit.html.erb
      create  app/views/layouts/words.html.erb
      create  public/stylesheets/scaffold.css
  dependency  model
      exists    app/models/
      exists    test/unit/
      exists    test/fixtures/
   identical    app/models/word.rb
   identical    test/unit/word_test.rb
   identical    test/fixtures/words.yml
      exists    db/migrate
Another migration is already named create_words: db/migrate/001_create_words.rb

app/view以下はできたけど
app/controllers/todo_controller.rb が生成されなかったので、controllerだけ作った

SHOKAI-MAG /home/sho/src/shiritori% ./script/generate controller word
      exists  app/controllers/
      exists  app/helpers/
      create  app/views/word
      exists  test/functional/
      create  app/controllers/word_controller.rb
      create  test/functional/word_controller_test.rb
      create  app/helpers/word_helper.rb