roo gem をインストールしたばかりで、Ruby スクリプトを実行しようとすると、次のエラーが発生します。
/usr/local/Cellar/ruby/1.9.3-p125/lib/ruby/1.9.1/rubygems/specification.rb:1615:in `raise_if_conflicts': Unable to activate google_drive-0.3.0, because nokogiri-1.5.2 conflicts with nokogiri (!= 1.5.1, != 1.5.2, >= 1.4.4) (Gem::LoadError)
from /usr/local/Cellar/ruby/1.9.3-p125/lib/ruby/1.9.1/rubygems/specification.rb:738:in `activate'
from /usr/local/Cellar/ruby/1.9.3-p125/lib/ruby/1.9.1/rubygems/specification.rb:764:in `block in activate_dependencies'
from /usr/local/Cellar/ruby/1.9.3-p125/lib/ruby/1.9.1/rubygems/specification.rb:758:in `each'
from /usr/local/Cellar/ruby/1.9.3-p125/lib/ruby/1.9.1/rubygems/specification.rb:758:in `activate_dependencies'
from /usr/local/Cellar/ruby/1.9.3-p125/lib/ruby/1.9.1/rubygems/specification.rb:742:in `activate'
from /usr/local/Cellar/ruby/1.9.3-p125/lib/ruby/1.9.1/rubygems/specification.rb:764:in `block in activate_dependencies'
from /usr/local/Cellar/ruby/1.9.3-p125/lib/ruby/1.9.1/rubygems/specification.rb:758:in `each'
from /usr/local/Cellar/ruby/1.9.3-p125/lib/ruby/1.9.1/rubygems/specification.rb:758:in `activate_dependencies'
from /usr/local/Cellar/ruby/1.9.3-p125/lib/ruby/1.9.1/rubygems/specification.rb:742:in `activate'
from /usr/local/Cellar/ruby/1.9.3-p125/lib/ruby/1.9.1/rubygems.rb:209:in `rescue in try_activate'
from /usr/local/Cellar/ruby/1.9.3-p125/lib/ruby/1.9.1/rubygems.rb:206:in `try_activate'
from /usr/local/Cellar/ruby/1.9.3-p125/lib/ruby/1.9.1/rubygems/custom_require.rb:58:in `rescue in require'
from /usr/local/Cellar/ruby/1.9.3-p125/lib/ruby/1.9.1/rubygems/custom_require.rb:35:in `require'
from Untitled.rb:8:in `<main>'
問題を解決する方法を知っている人はいますか?
ありがとう