Ive been playing for 2 weeks now on my 3rd generation, but my game keeps shutting down on start up? any ideas

That's not very much information to go on, but you might want to start with these two answers in our Support FAQ. If they don't help, perhaps you could provide a little bit more detail about the problem.

My Virtual Families (Windows) game quits before it completely loads.

The game minimizes to the taskbar and can't be played.