title: Assets not being run though the .erb preprocessor
body: <p>I am having trouble trying to <code>rake assets:precompile</code> in my rails 3.1 app. I keep getting the following error:</p>
  
  <pre><code> rake aborted!
   Invalid CSS after "...und-image: url(": expected ")", was "&lt;%= asset_path(..."
  </code></pre>
  
  <p>It seems that the erb preprocessor is not being invokeb but my file is called <code>style.css.scss.erb</code>. Any suggestions?</p>