I would like to make a modest proposal: If you are going to ship a demo/tutorial/sample/example app for somebody to use in order to start learning how to make use of some new, unfamiliar, and (at least under the covers) pretty complicated thing, it would be best to make sure that the very first and only thing the app did was to only put up a dialog box saying, "Unknown Error" and nothing else other than an "OK" button.