我之前在这里阅读了很多问题，不幸的是，所描述的解决方案都不适合我。我在 OSX 上并通过 rvm 使用 ruby-1.9.3-p448。一切都是新设置的。
然后我做sudo gem install compass了指南针和sass。没有错误信息。
stnwbr$ ruby -v
ruby 1.9.3p448 (2013-06-27 revision 41675) [x86_64-darwin12.4.0]
stnwbr$ compass -v
Compass 0.12.2 (Alnilam)
stnwbr$ sass -v
Sass 3.2.10 (Media Mark)
但是一旦我做类似的事情compass create或者compass watch我得到：
stnwbr$ compass create
LoadError on line ["51"] of /Users/stnwbr/.rvm/rubies/ruby-1.9.3-p448/lib/ruby/site_ruby/1.9.1/rubygems/core_ext/kernel_require.rb: cannot load such file -- breakpoint
Run with --trace to see the full backtrace
包括--trace结果如下：
stnwbr$ compass create --trace
LoadError on line ["51"] of /Users/stnwbr/.rvm/rubies/ruby-1.9.3-p448/lib/ruby/site_ruby/1.9.1/rubygems/core_ext/kernel_require.rb: cannot load such file -- breakpoint
/Users/stnwbr/.rvm/rubies/ruby-1.9.3-p448/lib/ruby/site_ruby/1.9.1/rubygems/core_ext/kernel_require.rb:51:in `require'
/Users/stnwbr/.rvm/gems/ruby-1.9.3-p448/gems/compass-0.12.2/lib/compass/configuration/data.rb:161:in `require'
/Users/stnwbr/Dropbox/Projects/2013/11 OUA outdooradventures/OUA-sync/config.rb:1:in `get_binding'
/Users/stnwbr/.rvm/gems/ruby-1.9.3-p448/gems/compass-0.12.2/lib/compass/configuration/serialization.rb:24:in `eval'
/Users/stnwbr/.rvm/gems/ruby-1.9.3-p448/gems/compass-0.12.2/lib/compass/configuration/serialization.rb:24:in `parse_string'
/Users/stnwbr/.rvm/gems/ruby-1.9.3-p448/gems/compass-0.12.2/lib/compass/configuration/serialization.rb:15:in `block in _parse'
/Users/stnwbr/.rvm/gems/ruby-1.9.3-p448/gems/compass-0.12.2/lib/compass/configuration/serialization.rb:14:in `open'
/Users/stnwbr/.rvm/gems/ruby-1.9.3-p448/gems/compass-0.12.2/lib/compass/configuration/serialization.rb:14:in `_parse'
/Users/stnwbr/.rvm/gems/ruby-1.9.3-p448/gems/compass-0.12.2/lib/compass/configuration/file_data.rb:7:in `block in new_from_file'
/Users/stnwbr/.rvm/gems/ruby-1.9.3-p448/gems/compass-0.12.2/lib/compass/configuration/inheritance.rb:204:in `with_defaults'
/Users/stnwbr/.rvm/gems/ruby-1.9.3-p448/gems/compass-0.12.2/lib/compass/configuration/file_data.rb:6:in `new_from_file'
/Users/stnwbr/.rvm/gems/ruby-1.9.3-p448/gems/compass-0.12.2/lib/compass/configuration/helpers.rb:42:in `configuration_for'
/Users/stnwbr/.rvm/gems/ruby-1.9.3-p448/gems/compass-0.12.2/lib/compass/configuration/helpers.rb:97:in `add_project_configuration'
/Users/stnwbr/.rvm/gems/ruby-1.9.3-p448/gems/compass-0.12.2/lib/compass/commands/project_base.rb:31:in `add_project_configuration'
/Users/stnwbr/.rvm/gems/ruby-1.9.3-p448/gems/compass-0.12.2/lib/compass/commands/installer_command.rb:9:in `configure!'
/Users/stnwbr/.rvm/gems/ruby-1.9.3-p448/gems/compass-0.12.2/lib/compass/commands/project_base.rb:15:in `initialize'
/Users/stnwbr/.rvm/gems/ruby-1.9.3-p448/gems/compass-0.12.2/lib/compass/commands/stamp_pattern.rb:69:in `initialize'
/Users/stnwbr/.rvm/gems/ruby-1.9.3-p448/gems/compass-0.12.2/lib/compass/exec/sub_command_ui.rb:42:in `new'
/Users/stnwbr/.rvm/gems/ruby-1.9.3-p448/gems/compass-0.12.2/lib/compass/exec/sub_command_ui.rb:42:in `perform!'
/Users/stnwbr/.rvm/gems/ruby-1.9.3-p448/gems/compass-0.12.2/lib/compass/exec/sub_command_ui.rb:15:in `run!'
/Users/stnwbr/.rvm/gems/ruby-1.9.3-p448/gems/compass-0.12.2/bin/compass:30:in `block in <top (required)>'
/Users/stnwbr/.rvm/gems/ruby-1.9.3-p448/gems/compass-0.12.2/bin/compass:44:in `call'
/Users/stnwbr/.rvm/gems/ruby-1.9.3-p448/gems/compass-0.12.2/bin/compass:44:in `<top (required)>'
/Users/stnwbr/.rvm/gems/ruby-1.9.3-p448/bin/compass:23:in `load'
/Users/stnwbr/.rvm/gems/ruby-1.9.3-p448/bin/compass:23:in `<main>'
/Users/stnwbr/.rvm/gems/ruby-1.9.3-p448/bin/ruby_noexec_wrapper:14:in `eval'
/Users/stnwbr/.rvm/gems/ruby-1.9.3-p448/bin/ruby_noexec_wrapper:14:in `<main>'
不幸的是，这就是我的理解停止的地方。所有想法表示赞赏！谢谢你。