It's certainly visibly working for thousands of people, since they're using it.
Do you get the lists below the map? It's the same information, but in table form.
I get jack all and nothing. It pretends like it's loading, then it just stops and gives me a 500.
Just a wild guess, but you might want to set your game location.
If I had a game, I wouldn't need the app.....

And..... it works? WTF?
Ok, this is the first time I've tried bringing it up on a Win 7 computer. Could that be it? Could the system not being playing nice with Win XP? That'd be weird I think (what little I understand about programming).
Well, there's a bit more info for you. I just brought up one of the failing comps on the same network, and they still fail. However, the Win 7 comp seems to bring it up. As far as I know, the win XP comps are as up to date as they get. Same with their Win Ex and Firefox.
WEIRD!