title: App Domain: not a valid domain. Site URL is not a valid URL
body: <p>I have a domain at <a href="http://qotr.net" rel="noreferrer">http://qotr.net</a> that I'm trying to set up as an app so that I can use OAuth. It <em>was</em> set up a few weeks ago, and we just now finished implementing the OAuth hooks on our application, when Facebook started giving us errors.</p>
  
  <p>Now, when I go to the settings page, and edit anything, I get:</p>
  
  <p>Error
  App Domain: qotr.net is not a valid domain.
  Site URL is not a valid URL.</p>
  
  <p>I have: <code>qotr.net</code> for the app domain and <code>http://qotr.net</code> for the site url.</p>
  
  <p><a href="http://developers.facebook.com/tools/debug/og/object?q=http%3A%2F%2Fqotr.net" rel="noreferrer">http://developers.facebook.com/tools/debug/og/object?q=http%3A%2F%2Fqotr.net</a></p>
  
  <p>Tells me that it can't parse qotr.net. The site is clearly up and usable, and Google OAuth works.</p>
  
  <p>I can't find anything online on why it might not parse correctly; any ideas?</p>