无法初始化本地服务器为我的Rails应用

Question

我的Rails应用程序已经在我最近吓坏了。我通过运行“Ruby脚本/服务器”像正常启动我的本地服务器。服务器开始，但是当我尝试通过访问它“的http：//本地主机：3000 / ”，它抛出我一个500错误。出现这种情况我所有的Rails应用，即使是旧的，我保持不变好几个月了。以下是完整的跟踪：

---

/!\ FAILSAFE /!\  2010-02-17 23:34:46 -0800
  Status: 500 Internal Server Error
  uninitialized constant FFI::Platform::CPU
    /opt/local/lib/ruby/gems/1.9.1/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:440:in `rescue in load_missing_constant'
    /opt/local/lib/ruby/gems/1.9.1/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:436:in `load_missing_constant'
    /opt/local/lib/ruby/gems/1.9.1/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:80:in `const_missing_with_dependencies'
    /Users/elpizochoi/.gem/ruby/1.9.1/gems/ffi-0.6.2/lib/ffi/platform.rb:50:in `<module:Platform>'
    /Users/elpizochoi/.gem/ruby/1.9.1/gems/ffi-0.6.2/lib/ffi/platform.rb:32:in `<module:FFI>'
    /Users/elpizochoi/.gem/ruby/1.9.1/gems/ffi-0.6.2/lib/ffi/platform.rb:29:in `<top (required)>'
    /opt/local/lib/ruby/gems/1.9.1/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:156:in `require'
    /opt/local/lib/ruby/gems/1.9.1/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:156:in `block in require'
    /opt/local/lib/ruby/gems/1.9.1/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:521:in `new_constants_in'
    /opt/local/lib/ruby/gems/1.9.1/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:156:in `require'
    /Users/elpizochoi/.gem/ruby/1.9.1/gems/ffi-0.6.2/lib/ffi/ffi.rb:42:in `<top (required)>'
    /opt/local/lib/ruby/gems/1.9.1/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:156:in `require'
    /opt/local/lib/ruby/gems/1.9.1/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:156:in `block in require'
    /opt/local/lib/ruby/gems/1.9.1/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:521:in `new_constants_in'
    /opt/local/lib/ruby/gems/1.9.1/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:156:in `require'
    /Users/elpizochoi/.gem/ruby/1.9.1/gems/ffi-0.6.2/lib/ffi.rb:11:in `<top (required)>'
    /opt/local/lib/ruby/gems/1.9.1/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:156:in `require'
    /opt/local/lib/ruby/gems/1.9.1/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:156:in `block in require'
    /opt/local/lib/ruby/gems/1.9.1/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:521:in `new_constants_in'
    /opt/local/lib/ruby/gems/1.9.1/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:156:in `require'
    /opt/local/lib/ruby/gems/1.9.1/gems/sqlite3-0.0.8/lib/sqlite3.rb:1:in `<top (required)>'
    /opt/local/lib/ruby/gems/1.9.1/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:156:in `require'
    /opt/local/lib/ruby/gems/1.9.1/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:156:in `block in require'
    /opt/local/lib/ruby/gems/1.9.1/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:521:in `new_constants_in'
    /opt/local/lib/ruby/gems/1.9.1/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:156:in `require'
    /opt/local/lib/ruby/gems/1.9.1/gems/activesupport-2.3.5/lib/active_support/core_ext/kernel/requires.rb:7:in `block in require_library_or_gem'
    /opt/local/lib/ruby/gems/1.9.1/gems/activesupport-2.3.5/lib/active_support/core_ext/kernel/reporting.rb:11:in `silence_warnings'
    /opt/local/lib/ruby/gems/1.9.1/gems/activesupport-2.3.5/lib/active_support/core_ext/kernel/requires.rb:5:in `require_library_or_gem'
    /opt/local/lib/ruby/gems/1.9.1/gems/activerecord-2.3.5/lib/active_record/connection_adapters/sqlite3_adapter.rb:10:in `sqlite3_connection'
    /opt/local/lib/ruby/gems/1.9.1/gems/activerecord-2.3.5/lib/active_record/connection_adapters/abstract/connection_pool.rb:223:in `new_connection'
    /opt/local/lib/ruby/gems/1.9.1/gems/activerecord-2.3.5/lib/active_record/connection_adapters/abstract/connection_pool.rb:245:in `checkout_new_connection'
    /opt/local/lib/ruby/gems/1.9.1/gems/activerecord-2.3.5/lib/active_record/connection_adapters/abstract/connection_pool.rb:188:in `block (2 levels) in checkout'
    /opt/local/lib/ruby/gems/1.9.1/gems/activerecord-2.3.5/lib/active_record/connection_adapters/abstract/connection_pool.rb:184:in `loop'
    /opt/local/lib/ruby/gems/1.9.1/gems/activerecord-2.3.5/lib/active_record/connection_adapters/abstract/connection_pool.rb:184:in `block in checkout'
    /opt/local/lib/ruby/1.9.1/monitor.rb:190:in `mon_synchronize'
    /opt/local/lib/ruby/gems/1.9.1/gems/activerecord-2.3.5/lib/active_record/connection_adapters/abstract/connection_pool.rb:183:in `checkout'
    /opt/local/lib/ruby/gems/1.9.1/gems/activerecord-2.3.5/lib/active_record/connection_adapters/abstract/connection_pool.rb:98:in `connection'
    /opt/local/lib/ruby/gems/1.9.1/gems/activerecord-2.3.5/lib/active_record/connection_adapters/abstract/connection_pool.rb:326:in `retrieve_connection'
    /opt/local/lib/ruby/gems/1.9.1/gems/activerecord-2.3.5/lib/active_record/connection_adapters/abstract/connection_specification.rb:123:in `retrieve_connection'
    /opt/local/lib/ruby/gems/1.9.1/gems/activerecord-2.3.5/lib/active_record/connection_adapters/abstract/connection_specification.rb:115:in `connection'
    /opt/local/lib/ruby/gems/1.9.1/gems/activerecord-2.3.5/lib/active_record/query_cache.rb:9:in `cache'
    /opt/local/lib/ruby/gems/1.9.1/gems/activerecord-2.3.5/lib/active_record/query_cache.rb:28:in `call'
    /opt/local/lib/ruby/gems/1.9.1/gems/activerecord-2.3.5/lib/active_record/connection_adapters/abstract/connection_pool.rb:361:in `call'
    /opt/local/lib/ruby/gems/1.9.1/gems/actionpack-2.3.5/lib/action_controller/string_coercion.rb:25:in `call'
    /opt/local/lib/ruby/gems/1.9.1/gems/rack-1.0.1/lib/rack/head.rb:9:in `call'
    /opt/local/lib/ruby/gems/1.9.1/gems/rack-1.0.1/lib/rack/methodoverride.rb:24:in `call'
    /opt/local/lib/ruby/gems/1.9.1/gems/actionpack-2.3.5/lib/action_controller/params_parser.rb:15:in `call'
    /opt/local/lib/ruby/gems/1.9.1/gems/actionpack-2.3.5/lib/action_controller/session/cookie_store.rb:93:in `call'
    /opt/local/lib/ruby/gems/1.9.1/gems/actionpack-2.3.5/lib/action_controller/failsafe.rb:26:in `call'
    /opt/local/lib/ruby/gems/1.9.1/gems/rack-1.0.1/lib/rack/lock.rb:11:in `block in call'
    <internal:prelude>:8:in `synchronize'
    /opt/local/lib/ruby/gems/1.9.1/gems/rack-1.0.1/lib/rack/lock.rb:11:in `call'
    /opt/local/lib/ruby/gems/1.9.1/gems/actionpack-2.3.5/lib/action_controller/dispatcher.rb:114:in `block in call'
    /opt/local/lib/ruby/gems/1.9.1/gems/actionpack-2.3.5/lib/action_controller/reloader.rb:34:in `run'
    /opt/local/lib/ruby/gems/1.9.1/gems/actionpack-2.3.5/lib/action_controller/dispatcher.rb:108:in `call'
    /opt/local/lib/ruby/gems/1.9.1/gems/rails-2.3.5/lib/rails/rack/static.rb:31:in `call'
    /opt/local/lib/ruby/gems/1.9.1/gems/rack-1.0.1/lib/rack/urlmap.rb:46:in `block in call'
    /opt/local/lib/ruby/gems/1.9.1/gems/rack-1.0.1/lib/rack/urlmap.rb:40:in `each'
    /opt/local/lib/ruby/gems/1.9.1/gems/rack-1.0.1/lib/rack/urlmap.rb:40:in `call'
    /opt/local/lib/ruby/gems/1.9.1/gems/rails-2.3.5/lib/rails/rack/log_tailer.rb:17:in `call'
    /opt/local/lib/ruby/gems/1.9.1/gems/rack-1.0.1/lib/rack/content_length.rb:13:in `call'
    /opt/local/lib/ruby/gems/1.9.1/gems/rack-1.0.1/lib/rack/handler/webrick.rb:50:in `service'
    /opt/local/lib/ruby/1.9.1/webrick/httpserver.rb:111:in `service'
    /opt/local/lib/ruby/1.9.1/webrick/httpserver.rb:70:in `run'
    /opt/local/lib/ruby/1.9.1/webrick/server.rb:183:in `block in start_thread'

---

配置：我的Ruby 1.9的MacPorts与安装，和我on Rails的2.3.5运行。 有些事情我一直在玩最近： - 搞砸与RVM - 尝试了家酿，一个MacOSX的包管理系统 - 安装独角兽和薄如宝石

任何帮助，将不胜感激！我不希望有放弃我的系统并重新安装了一切。

Answer 1

当我得到“未初始化的常数”错误，我通常具有丢失类或库，例如一个项目或分支的一个不完整的结帐。你的情况可能会有一些问题，FFI ::平台:: CPU

的路径/设置

BTW你提的是：“不要有放弃我的系统并重新安装一切” - >我在一段时间使用git版本控制我的开发环境一次，这样我就可以签出先前的快照的麻烦开始了之前。

好运！