Grunt任务指南针失败 - 找不到RubyGem指南针(> = 0)

我最近将机器从iMac转移到了新的Mac Book Pro with Mavericks.一切都很好,但我注意到当我保存文件时Grunt崩溃(自动更新无法正常工作).我试图更新我的系统但是当我通过终端运行我的grunt任务时,我收到以下错误:

Running "compass:dev" (compass) task
/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/rubygems.rb:777:in `report_activate_error': Could not find RubyGem compass (>= 0) (Gem::LoadError)
    from /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/rubygems.rb:211:in `activate'
    from /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/rubygems.rb:1056:in `gem'
    from /usr/bin/compass:18

有人会对如何解决这个问题有任何建议吗？我从我的项目中删除了指南针并完成了npm安装,没有任何改变.

当我跑步时,$ gem list我得到以下内容:

*** LOCAL GEMS ***

bigdecimal (1.2.0)
bundler (1.5.1)
bundler-unload (1.0.2)
executable-hooks (1.2.6)
gem-wrappers (1.2.4, 1.2.1)
io-console (0.4.2)
json (1.7.7)
minitest (4.3.2)
psych (2.0.0)
rake (0.9.6)
rdoc (4.0.0)
rubygems-bundler (1.4.2)
rvm (1.11.3.8)
test-unit (2.0.0.0)

然后我尝试了跑步,$ sudo gem update --system但我得到了回应:Latest version currently installed. Aborting.

任何想法,任何人？