So I have Sims 3 Pets now, I got it for Christmas, and I was quite enjoying it, but I seem to have developed a problem with my game since installing. The first time I had a problem was a few days ago, when after a long time without saving the game crashed. It was annoying but I simply restarted the game and continued. The next day as I was playing, the same thing happened again, after about a Sim day's worth of play. Today, I've tried to play three times, and each time it crashes - the time between starting the game and crashing the game gets shorter each time. I'm playing the game on a Macbook Pro, which I've had for almost exactly two years. I'm using version 10.5.8 - I'm aware that there is an update but I haven't got round to downloading it yet. Has anyone had this problem or does anyone know how to solve it? It's becoming increasingly annoying.