It works using mouse, but the keyboard is not functional at all.

Did you click in the 3D view first? Doesn't the space bar let you switch between Aerial view and Virtual visit modes?

Yes I did click in the app and I am able to pan the view using the mouse in the app view. Likewise I can move around using mouse on the small arrows i the upper left corner. But still after this, the keyboard does nothing, not the spacebar and neither does the arrow keys.

Further. I asked my colleague to try it at work today. He is using Windows 7 and newest Oracle Java. He does not even get a view. The app seems to startup well. After accepting the warning popups the cirle spins a little around a cup - and he just gets a blank app vindow.