/usr/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:55：未初始化的常量ActiveSupport :: Dependencies :: Mutex（NameError）
来自/usr/local/lib/site_ruby/1.8/rubygems/custom_require.rb:55:in gem_original_require'
from /usr/local/lib/site_ruby/1.8/rubygems/custom_require.rb:55:in require'
来自/usr/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/active_support.rb:56
来自/usr/local/lib/site_ruby/1.8/rubygems/custom_require.rb:55:in gem_original_require'
from /usr/local/lib/site_ruby/1.8/rubygems/custom_require.rb:55:in require'
来自/usr/lib/ruby/gems/1.8/gems/rails-2.3.5/bin/../lib/rails_generator.rb:28
来自/usr/local/lib/site_ruby/1.8/rubygems/custom_require.rb:55:in gem_original_require'
from /usr/local/lib/site_ruby/1.8/rubygems/custom_require.rb:55:in require'
来自/usr/lib/ruby/gems/1.8/gems/rails-2.3.5/bin/rails:14
来自/ usr / bin / rails：19：在'load'中
来自/ usr / bin / rails：19