Had an issue using the player framework within a WinRT application whilst using data-binding. We attempted to bind the StartupPosition property to a property on our view-model; but it seemed to have no effect.
In the output windows we received the following error:
'Error: Converter failed to convert value of type 'Windows.Foundation.IReference`1<DateTime>' to type 'IReference`1<DateTime>'
It appears to be related to a problem that a Nullable Type is not an allowed property in XAML - http://social.msdn.microsoft.com/Forums/en-US/winappswithcsharp/thread/96aa8da5-d2e0-4508-9716-95be05475a4c
We worked around it for now by modifying the source code - we set the dependency property type to a object rather than a DateTime?