paths need to start with / (ArgumentError)
===

This question is similar to that of [Neil Hoff's post][1] from a few days ago.
I downloaded Ruby On Rails using Helicon Zoo's ruby package. I am running this on Windows 7 using IIS Express & WebMatrix. 

Like, the other question when I browse to the site, I am getting the following:

    [tid-12570000] paths need to start with / (ArgumentError)
	C:/Ruby19/lib/ruby/gems/1.9.1/gems/rack-1.3.6/lib/rack/urlmap.rb:33:in `block in remap'
	C:/Ruby19/lib/ruby/gems/1.9.1/gems/rack-1.3.6/lib/rack/urlmap.rb:25:in `each'
	C:/Ruby19/lib/ruby/gems/1.9.1/gems/rack-1.3.6/lib/rack/urlmap.rb:25:in `map'
	C:/Ruby19/lib/ruby/gems/1.9.1/gems/rack-1.3.6/lib/rack/urlmap.rb:25:in `remap'
	C:/Ruby19/lib/ruby/gems/1.9.1/gems/rack-1.3.6/lib/rack/urlmap.rb:18:in `initialize'
	C:/Ruby19/lib/ruby/gems/1.9.1/gems/rack-1.3.6/lib/rack/builder.rb:128:in `new'
	C:/Ruby19/lib/ruby/gems/1.9.1/gems/rack-1.3.6/lib/rack/builder.rb:128:in `to_app'
	C:/ZooExpress/Workers/ruby/lib/app.rb:45:in `build_app'
	C:/ZooExpress/Workers/ruby/lib/app.rb:16:in `initialize'
	C:/ZooExpress/Workers/ruby/lib/worker.rb:4:in `new'
	C:/ZooExpress/Workers/ruby/lib/worker.rb:4:in `initialize'
	C:/ZooExpress/Workers/ruby/zoorack.rb:30:in `new'
	C:/ZooExpress/Workers/ruby/zoorack.rb:30:in `<module:Zack>'
	C:/ZooExpress/Workers/ruby/zoorack.rb:12:in `<main>'

I know that RoR on Windows does not have a big following, but have searched for the past 2 days for a solution to this, and via google, the only remotely related text seems to be the other SO question referred to above without an answer. 
Anyone got any ideas?

  [1]: http://stackoverflow.com/questions/11569614/deploy-sinatra-template-on-helicon-zoo