title: “An unexpected error occurred..." when enabling the Google Apps Marketplace SDK
body: <p>When creating a new Google Apps Console project and enabling the Google Apps Marketplace SDK, after the initial saving of the SDK details all subsequent tries to access the SDK page result in an error: “An unexpected error occurred. We’re looking into this.”</p>
  
  <p>The application is a contextual gadget with a custom extractor, and the problem repeats itself on multiple projects. The first time it happened in an older project, and then a newly created one got the same problem almost immediately after saving the SDK page.</p>