title: What is causing these crashes in our ios/xmarin app
body: <p>Our app has been working fine for weeks and then starting yesterday we are seeing all users getting app crashes (iphones and ipads). We pulled this one from a physical device </p>
  
  <p>Any help or hints would be hugely appreciated </p>
  
  <p><a href="http://pastebin.com/1tkvmH2W" rel="nofollow">http://pastebin.com/1tkvmH2W</a> </p>