Bourbon - File to import not found or unreadable: bourbon

I recently upgraded to rails 3.1 and also installed the Bourbon gem in my rails 3.1 app. Added this to my gemfile: gem 'bourbon' and ran $ bundle install but when in my application.css.scss I add the @import "bourbon"; line, i get the following error:

File to import not found or unreadable: bourbon.
Load path: Sass::Rails::Importer ...

here is my application.css.scss file

/*
 * This is a manifest file that'll automatically include all the stylesheets available in this directory
 * and any sub-directories. You're free to add application-wide styles to this file and they'll appear at
 * the top of the compiled file, but it's generally better to create a new file per style scope. 
 *= require_self
*/
@import "bourbon";
@import "scaffold.css.scs开发者_运维知识库s";
.hidden{
    display:none;
}

any idea how to load Boubon? what am I doing wrong?

I am guessing there need to be some files that need to be generated for rails to access bourbon library, no?

Any help or clues will be much appreciated

alik, try specifying the gem version number in your gemfile. https://rubygems.org/gems/bourbon

gem "bourbon", "~> 0.2.1"

rake bourbon:install will not help you on rails 3.1+