title: ListPicker control crashes app inventor 2 (ai2) when selected
body: <p>I am having a problem programming the Pizza Party example <a href="http://appinventor.mit.edu/explore/ai2/pizzaparty.html" rel="nofollow">http://appinventor.mit.edu/explore/ai2/pizzaparty.html</a> in ai2.  The biggest problem is that I can't even connect to Pizza Party using the 6 letter code.</p>
  
  <p>I am able to get around this by successfully connecting one of my other projects using the 6 letter code and then switching projects to Pizza Party.  The app shows up on my android screen, but when I press either ListPicker, the list displays momentarily and then the screen goes black, subsequently prompting me for the 6 letter code again.</p>
  
  <p>I am able to successfully press the submit button of the app so that's why I suspect the ListPicker.  I disabled all the blocks to make sure the code behind wasn't crashing silently.</p>
  
  <p>Can anyone shed light on why this is happening and how to overcome it?</p>
  
  <p>PS:  I have never been able to get the QR code scan to work</p>