Interpreting a "no route matches" message

Hi, -

I am trying to make the Highslide image viewer to work with with a Rails app and I have done everything (image tag markup, right files in right directories etc) according to their tutorial. However when I load the page with a highslide-marked-up image I get following error messages in the log:

ActionController::RoutingError (No route matches "/public/graphics/zoomin.cur" with {:method=>:get}):     /Library/Ruby/Gems/1.8/gems/actionpack-2.1.1/lib/action_controller/routing/recognition_optimisation.rb:67:in `recognize_path'

Now "/public/graphics/zoomin.cur" is a valid path to an existing file. I'm having a bit of trouble interpreting the error message because of that; is it just Rails not knowing which REST method to use while dealing with the path?

Many thanks, Vahagn