I have even copied the sprites and events from the penumbra example into my Windows 8 project but they don't work. I have tried assigning a motion behavior, set to the position of an object, set to the touch position, nothing seems to work.
Either the light is moving and the shadow isn't rendering the change, or it isn't working at all. I have been looking that the penumbra example but I am not seeing whatever the "gotcha" may be.
Is there an essential setting for a light to be able to move?