title: Can't create a new open graph achievement
body: <p>I keep getting the error:</p>
  
  <p>"The given selector string \"game:points\" is invalid for Ent with ID 10150679224277659"</p>
  
  <p>when trying to create a new achievement
  (using <a href="https://graph.facebook.com/myappid/achievements/?method=post&amp;access_token=...achievement=newurl" rel="nofollow">https://graph.facebook.com/myappid/achievements/?method=post&amp;access_token=...achievement=newurl</a>)</p>
  
  <p>this new achievement is totally different and has a different URL so why it keeps telling me about the other ID (10150679224277659) in this error?</p>
  
  <p>Any ideas?</p>