title: 403 Forbidden error when accessing Google Drive API downloadURL
body: <p>I've been doing a lot of development locally with the Google Drive API, but suddenly I'm no longer able to access files using the downloadUrl link.</p>
  
  <p>I'm wondering if I've been blocked or anything, although I can't see how as I should be well under the API limit. The 403 isn't the friendly Google one, but a standard:</p>
  
  <p>HTTP Error 403 (Forbidden): The server refused to fulfill the request</p>
  
  <p>Any ideas? Thanks!</p>