title: compass: You must compile individual stylesheets from the project directory
body: <p>A while ago I was using compass to generate stylesheets from sass for a project.</p>
  
  <p>Recently I returned to that project. I went to my sass directory and did "compass watch --debug .:."
  This generated the error "You must compile individual stylesheets from the project directory".</p>
  
  <p>I discovered that there was no config.rb in the directory. So I recreated one. It looks like this: </p>
  
  <pre><code>http_path = "/"
  css_dir = "/css"
  sass_dir = "/css"
  images_dir = "/img"
  javascripts_dir = "/js"
  preferred_syntax = :sass
  </code></pre>
  
  <p>However, all of my attempts to use compass result in the same error, no matter what values I put in the config. </p>
  
  <p>How do I get compass to actually process my sass?</p>