title: Google drive api and service account
body: <p>I created service account for my account name@steelkiwi.com(Google apps) and my application works fine. Then I created service account for my personal account name@gmail.com, use this new credentials for my application and now when I try to insert files I get error 500 with next text:</p>
  
  <blockquote>
    <p>HttpError 500 when requesting <a href="https://www.googleapis.com/upload/drive/v2/files?quotaUser=30&amp;uploadType=resumable&amp;convert=true&amp;ocr=false&amp;alt=json" rel="nofollow">https://www.googleapis.com/upload/drive/v2/files?quotaUser=30&amp;uploadType=resumable&amp;convert=true&amp;ocr=false&amp;alt=json</a> returned "Internal Error"</p>
  </blockquote>
  
  <p>The only thing that changes is credentials SERVICE_ACCOUNT_EMAIL and SERVICE_ACCOUNT_PKCS12_FILE_PATH. I have tried to create another service account for name@steelkiwi.com but it doesn't help, so bacically my app only works with first service account.
  Language is python.</p>