This is a known issue updating from RubyGems 1.2.0 to 1.3.1. See
http://rubyforge.org/forum/forum.php?forum_id=28071 for details. The
solution (listed on that page) is to run
gem install rubygems-update
followed by
update_rubygems
Both of those commands may need to be run as an admin user.
webtier_at_javadesktop.org wrote:
> Hello:
> I did 'Jruby script/generate controller home index', and I got "Rails requires RubyGems >= 1.3.1 (you have 1.2.0). Please 'gem update --system' and try again" message. I follwed, and did 'gem update --system', but it tells me there is nothing to update. My rails version is 2.2.2, I tried to install lower version, but did 'gem query --remote --name-matches rails', only rails 2.2.2 version comes up, which is the one I am having. Thank you very much.
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