title: Selenium error - couldn't register this node: hub down or not responding
body: <p>I'm getting this error message: <code>couldn't register this node: hub down or not responding.</code> when I'm trying to follow this quickstart guide:
  <a href="http://code.google.com/p/selenium/wiki/Grid2" rel="nofollow">http://code.google.com/p/selenium/wiki/Grid2</a></p>
  
  <p>When I run the command below:</p>
  
  <pre><code>java -jar selenium-server-standalone-2.14.0.jar -role node  -hub http://localhost:4444/grid/register
  </code></pre>
  
  <p>I download 2.17.0 version of selenium standalone jar...</p>
  
  <p>I don't know what to do after that.</p>