Is there a problem with map.root

Hi All,

I've taken a look at the rails API, and per it, I should be able to
say:

map.root :controller => 'controller_name'

. . .however, 'mongrel_rails start' seems to fail giving me an error:

** Starting Mongrel listening at 0.0.0.0:3000
** Starting Rails with development environment...
/usr/local/lib/ruby/gems/1.8/gems/actionpack-1.13.3/lib/
action_controller/routing.rb:965:in `build': Illegal route:
the :controller must be specified! (ArgumentError)
        from /usr/local/lib/ruby/gems/1.8/gems/actionpack-1.13.3/lib/
action_controller/routing.rb:1172:in `add_route'
        from /usr/local/lib/ruby/gems/1.8/gems/actionpack-1.13.3/lib/
action_controller/routing.rb:1178:in `add_named_route'
        from /usr/local/lib/ruby/gems/1.8/gems/actionpack-1.13.3/lib/
action_controller/routing.rb:997:in `root_without_deprecation'
        from /usr/local/lib/ruby/gems/1.8/gems/activesupport-1.4.2/lib/
active_support/deprecation.rb:94:in `root'
        from /Users/michwill/RUBY_PROJECTS/michael/config/../config/
routes.rb:2
        from /usr/local/lib/ruby/gems/1.8/gems/actionpack-1.13.3/lib/
action_controller/routing.rb:1139:in `draw'
        from /Users/michwill/RUBY_PROJECTS/michael/config/../config/
routes.rb:1
        from /usr/local/lib/ruby/gems/1.8/gems/activesupport-1.4.2/lib/
active_support/dependencies.rb:488:in `load'
         ... 21 levels...
        from /usr/local/lib/ruby/gems/1.8/gems/mongrel-1.0.1/lib/
mongrel/command.rb:211:in `run'
        from /usr/local/lib/ruby/gems/1.8/gems/mongrel-1.0.1/bin/
mongrel_rails:243
        from /usr/local/bin/mongrel_rails:16:in `load'
        from /usr/local/bin/mongrel_rails:16

Any ideas?

Thanks,
Michael