A complex scene I've been working on for the past few days, I just can't render it. I've tried decreasing the number of figures in the scene (12 girls on the scene), but the program just closes when rendering starts.

The situation is aggravated by the fact that the file is opened for about 2 hours. So I turn on the render, the program crashes, then I wait 2 hours for the file to open again, trying render again, crash and it's all over again.
I think the problem is in one of the materials I used for the girls. Ofcourse I'll figure it out, it just takes some more time. Sorry for the delay, guys, I just wasn't expecting problems like this!