Could not find i18n-0.6.0 in any of the sources (Bundler::GemNotFound)

但如果我运行“捆绑安装”它说一切都好:(

并且Gemfile的内容是：

source 'http://rubygems.org'
gem 'rake','0.8.7'
gem 'tzinfo','0.3.27'
gem 'mail','2.2.16'
gem 'arel','2.0.9'
gem 'rack','1.2.2'
gem 'i18n','0.6.0'

gem 'rails','3.0.5'
gem 'MysqL2'
gem 'paperclip'
gem 'devise'
gem 'jquery-rails'
gem 'acts-as-taggable-on'
gem "will_paginate","~> 3.0.pre2"
gem 'tiny_mce'
gem "oa-oauth",:require => "omniauth/oauth"
gem "acts_as_list"

“捆绑秀i18n”给出了

/usr/lib/ruby/gems/1.8/gems/i18n-0.6.0

是我的应用程序中的错误或托管错误？我该如何解决？