Как установить плагин в rails 3, получение команд - это не модуль (TypeError)

Я пытаюсь установить это как плагин:

https://github.com/phatworx/rack_ip_restrictor

Итак, я запускаю:

$ rails plugin install git://github.com/phatworx/rack_ip_restrictor.git

Это ошибки с:

/Users/userme/.rvm/gems/ruby-1.9.2-p180@andyw/gems/railties-3.0.5/lib/rails/commands/plugin.rb:277:in `<top (required)>': Commands is not a module (TypeError)
    from /Users/userme/.rvm/gems/ruby-1.9.2-p180@andyw/gems/activesupport-3.0.5/lib/active_support/dependencies.rb:239:in `require'
    from /Users/userme/.rvm/gems/ruby-1.9.2-p180@andyw/gems/activesupport-3.0.5/lib/active_support/dependencies.rb:239:in `block in require'
    from /Users/userme/.rvm/gems/ruby-1.9.2-p180@andyw/gems/activesupport-3.0.5/lib/active_support/dependencies.rb:225:in `block in load_dependency'
    from /Users/userme/.rvm/gems/ruby-1.9.2-p180@andyw/gems/activesupport-3.0.5/lib/active_support/dependencies.rb:596:in `new_constants_in'
    from /Users/userme/.rvm/gems/ruby-1.9.2-p180@andyw/gems/activesupport-3.0.5/lib/active_support/dependencies.rb:225:in `load_dependency'
    from /Users/userme/.rvm/gems/ruby-1.9.2-p180@andyw/gems/activesupport-3.0.5/lib/active_support/dependencies.rb:239:in `require'
    from /Users/userme/.rvm/gems/ruby-1.9.2-p180@andyw/gems/railties-3.0.5/lib/rails/commands.rb:17:in `<top (required)>'
    from script/rails:6:in `require'
    from script/rails:6:in `<main>'

Предложения, идеи? Спасибо