title: Facebook key hash does not match any stored key hashes on second run
body: <p>I am trying to use facebook api for login on my android application. After following the tutorials I was able to get the confirmation screen after clicking login by facebook button. But when i run my application second time I get "Facebook key hash does not match any stored key hashes" error. </p>
  
  <p>I follow other posts on stackoverflow, deleted my application and created once again etc. but on second run I again get the same error.</p>
  
  <p><a href="https://stackoverflow.com/questions/20301025/facebook-key-hash-does-not-match-any-stored-key-hashes">Facebook key hash does not match any stored key hashes</a></p>
  
  <p>Do you know what can be wrong and why I do not get on first run but I get this error on second run?</p>