Ruby on Rails

Well, I am now reading http://guides.rubyonrails.org/getting_started.html
(also tried Agile Web Development with Rails), but I do not get very
far. I follow the guide to chapter 4.1, but when I point my browser to
http://localhost:3000/home/index I get a blank page and the following
in mongrel.log:

Fri Aug 13 12:20:22 +0200 2010: Error calling Dispatcher.dispatch
#<NoMethodError: You have a nil object when you didn't expect it!
You might have expected an instance of Array.
The error occurred while evaluating nil.split>
/Users/sneigaard/.gem/ruby/1.8/gems/actionpack-2.3.8/lib/
action_controller/cgi_process.rb:52:in `dispatch_cgi'
/Users/sneigaard/.gem/ruby/1.8/gems/actionpack-2.3.8/lib/
action_controller/dispatcher.rb:101:in `dispatch_cgi'
/Users/sneigaard/.gem/ruby/1.8/gems/actionpack-2.3.8/lib/
action_controller/dispatcher.rb:27:in `dispatch'
/Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/bin/../lib/mongrel/rails.rb:
76:in `process'
/Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/bin/../lib/mongrel/rails.rb:
74:in `synchronize'
/Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/bin/../lib/mongrel/rails.rb:
74:in `process'
/Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/bin/../lib/mongrel.rb:159:in
`process_client'
/Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/bin/../lib/mongrel.rb:158:in
`each'
/Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/bin/../lib/mongrel.rb:158:in
`process_client'
/Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/bin/../lib/mongrel.rb:285:in
`run'
/Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/bin/../lib/mongrel.rb:285:in
`initialize'
/Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/bin/../lib/mongrel.rb:285:in
`new'
/Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/bin/../lib/mongrel.rb:285:in
`run'
/Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/bin/../lib/mongrel.rb:268:in
`initialize'
/Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/bin/../lib/mongrel.rb:268:in
`new'
/Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/bin/../lib/mongrel.rb:268:in
`run'
/Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/bin/../lib/mongrel/
configurator.rb:282:in `run'
/Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/bin/../lib/mongrel/
configurator.rb:281:in `each'
/Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/bin/../lib/mongrel/
configurator.rb:281:in `run'
/Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/bin/mongrel_rails:128:in
`run'
/Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/bin/../lib/mongrel/
command.rb:212:in `run'
/Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/bin/mongrel_rails:281
/usr/bin/mongrel_rails:19:in `load'
/usr/bin/mongrel_rails:19

Any ideas? Is my rails setup broken? I am runing on OS X 10.6.4, is it
is broken, then how can I uninstall it all and reinstall?

Thank you
Søren

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