警告：'/Library/Ruby/Gems/1.8/specifications/rack-1.3.5.gemspec‘中的.gemspec格式无效

Question

我正在尝试运行Sinatra应用程序，但失败了，因为找不到rack。我收到以下错误：

WARNING:  Invalid .gemspec format in '/Library/Ruby/Gems/1.8/specifications/rack-1.3.5.gemspec'
/Library/Ruby/Site/1.8/rubygems.rb:636:in `report_activate_error': Could not find RubyGem rack (~> 1.3, >= 1.3.4) (Gem::LoadError)
    from /Library/Ruby/Site/1.8/rubygems.rb:141:in `activate'
    from /Library/Ruby/Site/1.8/rubygems.rb:165:in `activate'
    from /Library/Ruby/Site/1.8/rubygems.rb:164:in `each'
    from /Library/Ruby/Site/1.8/rubygems.rb:164:in `activate'
    from /Library/Ruby/Site/1.8/rubygems/custom_require.rb:35:in `require'

我运行的是Ruby版本1.8.6

我已经尝试删除gemspec文件并再次运行gem install。当我安装机架时，它成功了，没有错误。

Answer 1

尝试更新您的rubygem包

gem更新--系统

Answer 2

你试过这个gem update --system吗？