title: Heroku app crashing
body: <p>I've just deployed my RoR app to Heroku, and the app works on my local port, but when I visit the Heroku address I get: </p>
  
  <blockquote>
    <p>App crashed This application is temporarily offline. If you're the
    administrator of this app, please check your heroku logs for the
    backtrace.</p>
  </blockquote>
  
  <p>This may be the error that I found in the logs:</p>
  
  <pre><code>2011-02-25T17:08:25-08:00 heroku[router]: Error H10 (App crashed) -&gt; GET afternoon-warrior-452.heroku.com/ dyno=none queue=0 wait=0ms service=0ms bytes=0
  2011-02-25T17:08:25-08:00 heroku[router]: Error H10 (App crashed) -&gt; GET afternoon-warrior-452.heroku.com/favicon.ico dyno=none queue=0 wait=0ms service=0ms bytes=0
  </code></pre>
  
  <p>How do I fix this?</p>