title: Rails 3.1 + Heroku Cedar - Static image assets are not being served
body: <p>I have deployed a Rails 3.1 application on Heroku Cedar. For some reason my static image assets are not being served:</p>
  
  <pre><code>2011-06-23T18:14:13+00:00 app[web.1]: Started GET "/assets/me_reminder-30f9d1dead32e12238888adbee4b92d3.png" for 98.207.60.248 at 2011-06-23 18:14:13 +0000
  2011-06-23T18:14:13+00:00 app[web.1]: Served asset /me_reminder-30f9d1dead32e12238888adbee4b92d3.png - 200 OK (0ms) (pid 1)
  2011-06-23T18:14:13+00:00 app[web.1]: cache: [GET /assets/me_reminder-30f9d1dead32e12238888adbee4b92d3.png] miss, store
  2011-06-23T18:14:13+00:00 heroku[router]: GET xxxx.herokuapp.com/assets/me_reminder-30f9d1dead32e12238888adbee4b92d3.png dyno=web.1 queue=0 wait=0ms service=35ms status=200 bytes=0
  </code></pre>
  
  <p>As you can see, it is returning something with 0 bytes. Needless to say, no image shows.</p>
  
  <p>However, all my other static assets (css, javascripts) are being served correctly. Any idea what could be wrong here?</p>
  
  <p>By the way, I have another Rails 3.1 app on heroku which is working just fine, so I don't think it's a problem with sprockets, etc.</p>
  
  <p>Thank you.</p>