RuntimeError с mysql2 и rails3 (bundler)

Я получаю эту ошибку

`establish_connection': Please install the mysql2 adapter: `gem install activerecord-mysql2-adapter` (no such file to load -- active_record/connection_adapters/mysql2_adapter) (RuntimeError)
  from /opt/ruby-enterprise-1.8.7-2010.02/lib/ruby/gems/1.8/gems/activerecord-

Здесь - дамп всей ошибки и мой конфиг и gemfile.