some programms (often self-scripted from hobby-programmer) are marked from some scanner as a virus, but does not mean, it is one :-) But well, better he posted it and its no one, as it is one and nobody recognize it
Try to hit "enter" when it freezes to make an explosion. Try "escape" to leave the programm. I´ve got the same impression, but it was only the mouse that was hidden. Does anyone know how to get the sprites in a row, and not in a 4x4 cube?