Create A World Sims 3 not working right?

i'm getting upset when are they just going to fix the problem wow i'm tired of using other 's worlds i would like to make my own . and when i do make my own world it's not working right the CAW Keep crashing on me . and not letting me make a big size world and they should just make it a other expansion pack or just put it back to the way they had it for the Sims 2 . i come up here and see other's are having the same problem not that far apart when i write JUST MAKE IT EASY FOR US TO USE