I'm currently trying to use Devise 1.1.pre3 as authentication in my upcoming project, but I can't get it to work properly.

I have done everything it says in the documentation, installed warden and the correct Devise version, run the install and used the generator to create the model. But when I try to access the sign up form (localhost:3000/users/sign_up) all I get is

No route matches "/users/sign_up"

But when I run rake routing I get the following:

...
GET  /users/sign_up(.:format) {:controller=>"devise/registrations", :action=>"new"}
...

I doesn't have any files matching that controller.

Is there any steps I have missed (installed, updated routing etc and created model)