I have also blank screen problem. I ran Mapsi in x-term:

~ $ /opt/usr/bin/Mapsi .Mapsi
Unsupported date format character at 1 (%-d.%-m.)
qrc:/qml/Main.qml:55:5: Type MapArea unavailable
qrc:/qml/MapArea.qml:2:1: module "QtMobility.location" is not installed

What I should to do? I tried to install QtMobility.location but I'm not sure which package is right one...