我正在运行一个linux实例。我的问题与LoadError使用Rails3和Ruby 1.9.2运行Mongrel相同除了我运行的是Ruby 1.8.7，我使用的是Linux。
以下是mongrel_cluster.log的内容：
** Starting Rails with development environment...
/usr/lib64/ruby/gems/1.8/gems/activesupport-3.0.8/lib/active_support/dependencies.rb:239:in `require': no such file to load -- dispatcher (LoadError)
from /usr/lib64/ruby/gems/1.8/gems/activesupport-3.0.8/lib/active_support/dependencies.rb:239:in `require'
from /usr/lib64/ruby/gems/1.8/gems/activesupport-3.0.8/lib/active_support/dependencies.rb:225:in `load_dependency'
from /usr/lib64/ruby/gems/1.8/gems/activesupport-3.0.8/lib/active_support/dependencies.rb:596:in `new_constants_in'
from /usr/lib64/ruby/gems/1.8/gems/activesupport-3.0.8/lib/active_support/dependencies.rb:225:in `load_dependency'
from /usr/lib64/ruby/gems/1.8/gems/activesupport-3.0.8/lib/active_support/dependencies.rb:239:in `require'
from /usr/lib64/ruby/gems/1.8/gems/mongrel-1.1.5/bin/../lib/mongrel/rails.rb:148:in `rails'
from /usr/lib64/ruby/gems/1.8/gems/mongrel-1.1.5/bin/mongrel_rails:113:in `cloaker_'
from /usr/lib64/ruby/gems/1.8/gems/mongrel-1.1.5/bin/../lib/mongrel/configurator.rb:149:in `call'
from /usr/lib64/ruby/gems/1.8/gems/mongrel-1.1.5/bin/../lib/mongrel/configurator.rb:149:in `listener'
from /usr/lib64/ruby/gems/1.8/gems/mongrel-1.1.5/bin/mongrel_rails:99:in `cloaker_'
from /usr/lib64/ruby/gems/1.8/gems/mongrel-1.1.5/bin/../lib/mongrel/configurator.rb:50:in `call'
from /usr/lib64/ruby/gems/1.8/gems/mongrel-1.1.5/bin/../lib/mongrel/configurator.rb:50:in `initialize'
from /usr/lib64/ruby/gems/1.8/gems/mongrel-1.1.5/bin/mongrel_rails:84:in `new'
from /usr/lib64/ruby/gems/1.8/gems/mongrel-1.1.5/bin/mongrel_rails:84:in `run'
from /usr/lib64/ruby/gems/1.8/gems/mongrel-1.1.5/bin/../lib/mongrel/command.rb:212:in `run'
from /usr/lib64/ruby/gems/1.8/gems/mongrel-1.1.5/bin/mongrel_rails:281
from /usr/bin/mongrel_rails:19:in `load'
from /usr/bin/mongrel_rails:19
我不知道如何解决这个问题。
有人能帮忙吗？TIA
gem list返回什么？
你的Gemfile看起来怎么样？
你试过重新安装Rails吗？
考虑为每个项目使用RVM和Gemset，这样就可以隔离gem冲突。
http://nerian.github.com/2011/01/15/RPS-1-RVM.html