Exact problem as chris, pentor and Vince – it was driving me crazy. Deleting the cache did not help – the gem magically reappears each time. I managed to install ActiveSupport 2.1.0 by downloading from its rubyforge project page manually and installing locally, and then “gem install rails” goes through just fine. Looks like a bad repository version to me. Was upgrading from Rails 1.2.3 on Vista, using RubyGems 1.2. --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk-unsubscribe@googlegroups.com For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en -~----------~----~----~----~------~----~------~--~---