Не удалось найти рельсы (> = 0 ) среди [] (Gem :: LoadError)

После установки rvm, обновления файла .gmrc, обновления rubygems и запуска gem install rails -v "> = 3.1.0rc" , У меня теперь, кажется, полный беспорядок:

$ rails -v
/usr/local/lib/site_ruby/1.8/rubygems/dependency.rb:247:in `to_specs': Could not find rails (>= 0) amongst [] (Gem::LoadError)
    from /usr/local/lib/site_ruby/1.8/rubygems/dependency.rb:256:in `to_spec'
    from /usr/local/lib/site_ruby/1.8/rubygems.rb:1182:in `gem'
    from /var/lib/gems/1.8/bin/rails:18

myhome@myhome-mini:~$ gem env

RubyGems Environment:
  - RUBYGEMS VERSION: 1.6.2
  - RUBY VERSION: 1.9.2 (2011-02-18 patchlevel 180) [i686-linux]
  - INSTALLATION DIRECTORY: /home/myhome/gems
  - RUBY EXECUTABLE: /home/myhome/.rvm/rubies/ruby-1.9.2-p180/bin/ruby
  - EXECUTABLE DIRECTORY: /home/myhome/gems/bin
  - RUBYGEMS PLATFORMS:
    - ruby
    - x86-linux
  - GEM PATHS:
     - /home/myhome/gems
     - /usr/lib/ruby/gems/1.8
  - GEM CONFIGURATION:
     - :update_sources => true
     - :verbose => true
     - :benchmark => false
     - :backtrace => false
     - :bulk_threshold => 1000
     - "gemhome" => "/home/myhome/gems"
     - "gempath" => ["/home/myhome/gems", "/usr/lib/ruby/gems/1.8"]
  - REMOTE SOURCES:
     - http://rubygems.org/