昨天我在一个ruby on rails应用程序（v2.3）上做开发，并决定将我的iMac更新到OSX Mavericks。现在，每次我试图在本地运行我的应用程序时，我都会得到以下错误。有人知道是什么导致了这个错误吗？

像这样奔跑

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，它工作正常。
我注意到的事情：

• ruby的版本现在安装在2.0中（之前是v1.8.7）

FYI：我对Rails还是个新手。

安装RVM之后：

好的，我设置了RVM，并确保安装了ruby（1.8.7）和rails（2.3.11）的版本，并将其配置为默认版本。
已安装的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

安装导轨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，当我运行应用程序时，我收到以下错误：（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