title: WP8 app crashes with SEHException exception
body: <p>Recently, my app often raise a crash when it starts, the below is its call stack:</p>
  
  <p>{System.Runtime.InteropServices.SEHException: External component has thrown an exception.
     at MS.Internal.JoltHelper.FireEvent(IntPtr unmanagedObj, IntPtr unmanagedObjArgs, Int32 argsTypeIndex, Int32 actualArgsTypeIndex, String eventName)}</p>
  
  <p>Do you know why, and where is the problem? Thank you!</p>