我昨天在 Rails 应用程序 (v2.3) 上开发 ruby，并决定将我的 iMac 更新为 OSX Mavericks。现在，每次我尝试在本地运行我的应用程序时，都会收到以下错误。有谁知道这是什么原因造成的？
像这样运行：
script/server -e development
错误：
/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb:45:in `require': cannot load such file -- script/../config/boot (LoadError)
from /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb:45:in `require'
from script/server:2:in `<main>'
脚本/服务器（文件）
#!/usr/bin/env ruby
require File.dirname(__FILE__) + '/../config/boot'
require 'commands/server'
在安装 OSX Mavericks 之前它运行良好。
我注意到的事情：
- 现在安装的 ruby 版本是 2.0（之前是 v1.8.7）
仅供参考：我对 Rails 还是很陌生。
安装 RVM 后：
好的，所以我设置了 RVM 并确保 ruby (1.8.7) 和 rails (2.3.11) 的版本已安装并配置为默认值。
安装的 RVM：
curl -L https://get.rvm.io | bash -s stable --rails
安装 Ruby 1.8.7：
rvm install ruby-1.8.7-p374
将 v1.8.7 设置为默认版本：
rvm --default use 1.8.7
安装 Rails v2.3.11：
gem install rails -v 2.3.11
从系统安装所有 gem
rvm system ; rvm gemset export system.gems ; rvm 1.8.7 ; rvm gemset import system
现在，当我运行我的应用程序时，出现以下错误：（我错过了什么？）
=> Booting WEBrick...
/Users/imaginationplus/.rvm/rubies/ruby-1.8.7-p374/lib/ruby/site_ruby/1.8/rubygems/core_ext/kernel_require.rb:53:in `gem_original_require': no such file to load -- haml (MissingSourceFile)
from /Users/imaginationplus/.rvm/rubies/ruby-1.8.7-p374/lib/ruby/site_ruby/1.8/rubygems/core_ext/kernel_require.rb:53:in `require'
from /Users/imaginationplus/gitlocal/dfc_workshop/vendor/rails/activesupport/lib/active_support/dependencies.rb:510:in `require'
from /Users/imaginationplus/gitlocal/dfc_workshop/vendor/rails/activesupport/lib/active_support/dependencies.rb:355:in `new_constants_in'
from /Users/imaginationplus/gitlocal/dfc_workshop/vendor/rails/activesupport/lib/active_support/dependencies.rb:510:in `require'
from /Users/imaginationplus/gitlocal/dfc_workshop/vendor/plugins/haml/init.rb:5:in `evaluate_init_rb'
from ./script/../config/../vendor/rails/railties/lib/rails/plugin.rb:95:in `evaluate_init_rb'
from /Users/imaginationplus/gitlocal/dfc_workshop/vendor/rails/activesupport/lib/active_support/core_ext/kernel/reporting.rb:11:in `silence_warnings'
from ./script/../config/../vendor/rails/railties/lib/rails/plugin.rb:91:in `evaluate_init_rb'
from ./script/../config/../vendor/rails/railties/lib/rails/plugin.rb:44:in `load'
from ./script/../config/../vendor/rails/railties/lib/rails/plugin/loader.rb:33:in `load_plugins'
from ./script/../config/../vendor/rails/railties/lib/rails/plugin/loader.rb:32:in `each'
from ./script/../config/../vendor/rails/railties/lib/rails/plugin/loader.rb:32:in `load_plugins'
from ./script/../config/../vendor/rails/railties/lib/initializer.rb:292:in `load_plugins'
from ./script/../config/../vendor/rails/railties/lib/initializer.rb:142:in `process'
from ./script/../config/../vendor/rails/railties/lib/initializer.rb:97:in `send'
from ./script/../config/../vendor/rails/railties/lib/initializer.rb:97:in `run'
from /Users/imaginationplus/gitlocal/dfc_workshop/config/environment.rb:14
from /Users/imaginationplus/.rvm/rubies/ruby-1.8.7-p374/lib/ruby/site_ruby/1.8/rubygems/core_ext/kernel_require.rb:53:in `gem_original_require'
from /Users/imaginationplus/.rvm/rubies/ruby-1.8.7-p374/lib/ruby/site_ruby/1.8/rubygems/core_ext/kernel_require.rb:53:in `require'
from /Users/imaginationplus/gitlocal/dfc_workshop/vendor/rails/activesupport/lib/active_support/dependencies.rb:510:in `require'
from /Users/imaginationplus/gitlocal/dfc_workshop/vendor/rails/activesupport/lib/active_support/dependencies.rb:355:in `new_constants_in'
from /Users/imaginationplus/gitlocal/dfc_workshop/vendor/rails/activesupport/lib/active_support/dependencies.rb:510:in `require'
from /Users/imaginationplus/gitlocal/dfc_workshop/vendor/rails/railties/lib/commands/servers/webrick.rb:59
from /Users/imaginationplus/.rvm/rubies/ruby-1.8.7-p374/lib/ruby/site_ruby/1.8/rubygems/core_ext/kernel_require.rb:53:in `gem_original_require'
from /Users/imaginationplus/.rvm/rubies/ruby-1.8.7-p374/lib/ruby/site_ruby/1.8/rubygems/core_ext/kernel_require.rb:53:in `require'
from /Users/imaginationplus/gitlocal/dfc_workshop/vendor/rails/activesupport/lib/active_support/dependencies.rb:510:in `require'
from /Users/imaginationplus/gitlocal/dfc_workshop/vendor/rails/activesupport/lib/active_support/dependencies.rb:355:in `new_constants_in'
from /Users/imaginationplus/gitlocal/dfc_workshop/vendor/rails/activesupport/lib/active_support/dependencies.rb:510:in `require'
from /Users/imaginationplus/gitlocal/dfc_workshop/vendor/rails/railties/lib/commands/server.rb:39
from script/server:3:in `require'
from script/server:3