Rails - Apr 2005 - newbie question - dispatcher

I install Rails on me Debian, create simply project, and send request from
browser.

I get from Webrick this ERROR log:

[2005-04-09 10:14:15] ERROR MissingSourceFile: no such file to load --
dispatcher
       
./../config/..//vendor/activesupport/lib/active_support/dependencies.rb:195:in
`require''
       
./../config/..//vendor/activesupport/lib/active_support/dependencies.rb:195:in
`require''
        /home/abu/rails/cookbook/public/dispatch.rb:9
       
./../config/..//vendor/activesupport/lib/active_support/dependencies.rb:187:in
`load''
       
./../config/..//vendor/activesupport/lib/active_support/dependencies.rb:187:in
`load''
        ./../config/..//vendor/railties/lib/webrick_server.rb:84:in
`handle_dispatch''
        ./../config/..//vendor/railties/lib/webrick_server.rb:35:in
`do_GET''
        /usr/lib/ruby/1.8/webrick/httpservlet/abstract.rb:35:in
`__send__''
        /usr/lib/ruby/1.8/webrick/httpservlet/abstract.rb:35:in
`service''
        /usr/lib/ruby/1.8/webrick/httpserver.rb:104:in `service''
        /usr/lib/ruby/1.8/webrick/httpserver.rb:65:in `run''
        /usr/lib/ruby/1.8/webrick/server.rb:169:in `start_thread''
        /usr/lib/ruby/1.8/webrick/server.rb:158:in `start''
        /usr/lib/ruby/1.8/webrick/server.rb:158:in `start_thread''
        /usr/lib/ruby/1.8/webrick/server.rb:92:in `start''
        /usr/lib/ruby/1.8/webrick/server.rb:89:in `each''
        /usr/lib/ruby/1.8/webrick/server.rb:89:in `start''
        /usr/lib/ruby/1.8/webrick/server.rb:79:in `start''
        /usr/lib/ruby/1.8/webrick/server.rb:79:in `start''
        ./../config/..//vendor/railties/lib/webrick_server.rb:21:in
`dispatch''
        ./server:50

please help me resolv this problem.