EclipseにRuby On Railを入れてデバックを開始するとエラーが起こる。

表示されたエラーがこれ。

C:/Ruby192/lib/ruby/site_ruby/1.9.1/rubygems.rb:926:in `report_activate_error’: RubyGem version error: ruby-debug-base(0.10.3 not >= 0) (Gem::LoadError)
from C:/Ruby192/lib/ruby/site_ruby/1.9.1/rubygems.rb:244:in `activate_dep’
from C:/Ruby192/lib/ruby/site_ruby/1.9.1/rubygems.rb:236:in `activate’
from C:/Ruby192/lib/ruby/site_ruby/1.9.1/rubygems.rb:213:in `rescue in try_activate’
from C:/Ruby192/lib/ruby/site_ruby/1.9.1/rubygems.rb:210:in `try_activate’
from C:/Ruby192/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:56:in `rescue in require’
from C:/Ruby192/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:35:in `require’
from C:/Ruby192/lib/ruby/gems/1.9.1/gems/ruby-debug-ide-0.4.5/lib/ruby-debug.rb:5:in `<top (required)>’
from C:/Ruby192/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:53:in `require’
from C:/Ruby192/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:53:in `require’
from C:/Ruby192/lib/ruby/gems/1.9.1/gems/ruby-debug-ide-0.4.5/bin/rdebug-ide:6:in `<top (required)>’
from C:/Ruby192/bin/rdebug-ide:19:in `load’
from C:/Ruby192/bin/rdebug-ide:19:in `<main>’

解決方法は、

gem install builder -v 2.1.2

を実行するだけです。

Ruby 1.9.2 – rubygems.rb:762:in `report_activate_error’ (Page 1) – Setup and Configuration – Rails Forum – Ruby on Rails Help and Discussion Forum