title: Android Facebook API - Invalid key problems
body: <p>I am trying to implement Facebook into my Android app.</p>
  
  <p>Everytime though, the facebook stuff fails because of an "Invalid key" error although I've been through the steps of setting up an app on FB and getting the key via keytool and so on.</p>
  
  <p>Is there any ideas I can try to fix it ? 
  Is it normal for a hash code to have symbols such as '/' or '=' in it?</p>