11-24-2013 06:32 PM - edited 11-24-2013 06:40 PM
Okay, I built the MapView example to 10.1 and run it on Z10 LE 10.2.1.1055 with no problems.
Sorry but it looks like it's something specific to your phone (or build).
[Edit] or location.
11-24-2013 06:38 PM
I downloaded PinGuin.
Both the initial page map and the smaller saved location map are working well with the marker showing up.
Scrolling works, zoom in/out work, rock solid with no unintentional zooming.
Not sure what to suggest but it works on 10.2.1 here in the UK.