Do you have latest the libqt4-declarative package(4.7.0~git20100909-0maemo1+0m5)? I will make it more clearer in the next version. I think I should also write some using instructions because there are some features that cannot be found if you don't know them (e.g. you can list all currently visible geocaches by double tapping geocache icon and you can switch between showing all/showing unfound geocaches by long pressing geocache icon)