我已经运行了几个月的sass和指南针，昨天我在Ruby和一个不相关的项目上遇到了一些问题。所以最后我重新安装了红宝石和sass。
从那以后，我无法再运行指南针手表而不会收到以下错误。
##########:######### #########$ compass watch
/Users/#############/.rvm/rubies/ruby-2.0.0-p247/lib/ruby/site_ruby/2.0.0/rubygems/core_ext/kernel_require.rb:116:in `require': cannot load such file -- sass/script/node (LoadError)
from /Users/#############/.rvm/rubies/ruby-2.0.0-p247/lib/ruby/site_ruby/2.0.0/rubygems/core_ext/kernel_require.rb:116:in `rescue in require'
from /Users/#############/.rvm/rubies/ruby-2.0.0-p247/lib/ruby/site_ruby/2.0.0/rubygems/core_ext/kernel_require.rb:122:in `require'
from /Users/#############/.rvm/gems/ruby-2.0.0-p247/gems/compass-0.12.2/lib/compass/sass_extensions/monkey_patches/browser_support.rb:1:in `<top (required)>'
from /Users/#############/.rvm/rubies/ruby-2.0.0-p247/lib/ruby/site_ruby/2.0.0/rubygems/core_ext/kernel_require.rb:51:in `require'
from /Users/#############/.rvm/rubies/ruby-2.0.0-p247/lib/ruby/site_ruby/2.0.0/rubygems/core_ext/kernel_require.rb:51:in `require'
from /Users/#############/.rvm/gems/ruby-2.0.0-p247/gems/compass-0.12.2/lib/compass/sass_extensions/monkey_patches.rb:2:in `block in <top (required)>'
from /Users/#############/.rvm/gems/ruby-2.0.0-p247/gems/compass-0.12.2/lib/compass/sass_extensions/monkey_patches.rb:1:in `each'
from /Users/#############/.rvm/gems/ruby-2.0.0-p247/gems/compass-0.12.2/lib/compass/sass_extensions/monkey_patches.rb:1:in `<top (required)>'
from /Users/#############/.rvm/rubies/ruby-2.0.0-p247/lib/ruby/site_ruby/2.0.0/rubygems/core_ext/kernel_require.rb:51:in `require'
from /Users/#############/.rvm/rubies/ruby-2.0.0-p247/lib/ruby/site_ruby/2.0.0/rubygems/core_ext/kernel_require.rb:51:in `require'
from /Users/#############/.rvm/gems/ruby-2.0.0-p247/gems/compass-0.12.2/lib/compass/sass_extensions.rb:9:in `<top (required)>'
from /Users/#############/.rvm/rubies/ruby-2.0.0-p247/lib/ruby/site_ruby/2.0.0/rubygems/core_ext/kernel_require.rb:51:in `require'
from /Users/#############/.rvm/rubies/ruby-2.0.0-p247/lib/ruby/site_ruby/2.0.0/rubygems/core_ext/kernel_require.rb:51:in `require'
from /Users/#############/.rvm/gems/ruby-2.0.0-p247/gems/compass-0.12.2/lib/compass.rb:5:in `block in <top (required)>'
from /Users/#############/.rvm/gems/ruby-2.0.0-p247/gems/compass-0.12.2/lib/compass.rb:4:in `each'
from /Users/#############/.rvm/gems/ruby-2.0.0-p247/gems/compass-0.12.2/lib/compass.rb:4:in `<top (required)>'
from /Users/#############/.rvm/rubies/ruby-2.0.0-p247/lib/ruby/site_ruby/2.0.0/rubygems/core_ext/kernel_require.rb:51:in `require'
from /Users/#############/.rvm/rubies/ruby-2.0.0-p247/lib/ruby/site_ruby/2.0.0/rubygems/core_ext/kernel_require.rb:51:in `require'
from /Users/#############/.rvm/gems/ruby-2.0.0-p247/gems/compass-0.12.2/bin/compass:20:in `block in <top (required)>'
from /Users/#############/.rvm/gems/ruby-2.0.0-p247/gems/compass-0.12.2/bin/compass:8:in `fallback_load_path'
from /Users/#############/.rvm/gems/ruby-2.0.0-p247/gems/compass-0.12.2/bin/compass:19:in `<top (required)>'
from /Users/#############/.rvm/gems/ruby-2.0.0-p247/bin/compass:23:in `load'
from /Users/#############/.rvm/gems/ruby-2.0.0-p247/bin/compass:23:in `<main>'
from /Users/#############/.rvm/gems/ruby-2.0.0-p247/bin/ruby_noexec_wrapper:14:in `eval'
from /Users/#############/.rvm/gems/ruby-2.0.0-p247/bin/ruby_noexec_wrapper:14:in `<main>'
命令似乎也不起作用，所以我重新安装了指南针，但仍然收到相同的错误。
以下是我正在运行的 ruby 和 sass 版本。 指南针 -v 不起作用。
Ruby 2.0.0p247 （2013-06-27 修订版 41674） [x86_64-达尔文11.4.2]Sass 3.3.0.alpha.253 （出血边缘）
有人对我如何解决这个问题有任何想法吗？
看起来您可能有一个版本的 SASS 不适用于此版本的指南针
我在这里找到了答案：https://github.com/chriseppstein/compass/issues/1514
以下内容对我有用：
看看你安装的 SASS 版本（你说的是 Sass 3.3.0.alpha.253）
sass --version
卸载sass：
sudo gem uninstall sass
重新安装 sass - 您应该获得最新的工作版本：
sudo gem install sass
重新安装指南针（我这样做了，它保留了我的 SASS 工作版本）：
sudo gem install compass