And leaves everything on world map unselectable.
Okay, I've had the game a few days (managed to get past the installation issues

), but today I've had a few occasions where I've been in the Town Map and it's randomly switched out to the World Map. While I can switch back into Town and do things normally, on the World map after this happens, nothing is selectable.
Well, when I say nothing is selectable, I can select towns/cities but no options/info boxes appear. I can't create any armies or anything.
The only thing that seems to fix this is logging out and then logging back in again. It's only a temporary fix though as it soons happens again. It's happened 3 times so far today.
Any ideas?