Trouble with Azteca

I bought Missing in Rome and Azteca is a bonus game. I played it for a while one day. The next day I went to play it again. But for some reason it would load. When I clicked to play, I got a black screen, then it flashed to game, then to desktop. Is there something wrong with this game?? I was doing good play it.

Or is this the type of game that says bonus game but actually a trial game?