title: how to rollback an interrupted deploy to GAE
body: <p>I interrupted a play framework deploy to gae</p>
  
  <p>I deployed it with</p>
  
  <pre><code>play gae:deploy --gae=$GAE_PATH
  </code></pre>
  
  <p>And press ctrl-c in the middle of it</p>
  
  <p>Now, when I try to redeploy it, I get the following error:</p>
  
  <pre><code>Unable to update app: Error posting to URL: https://appengine.google.com/api/appversion/create?app_id=playdoces&amp;version=20111007&amp;
  409 Conflict
  Another transaction by user opensas is already in progress for app: s~playdoces, version: 20111007. That user can undo the transaction with "appcfg rollback".
  
  Please see the logs [/tmp/appcfg1441845586056774629.log] for further information.
  </code></pre>
  
  <p>I tried with</p>
  
  <pre><code>/home/sas/devel/gae/bin/appcfg.sh rollback
  </code></pre>
  
  <p>but there's no such option</p>
  
  <p>any idea?</p>
  
  <hr>
  
  <p>In the end, I've just created another version and set it as default</p>
  
  <p>But I'd like to know if there's some way to cancel the previous deploy</p>