URGENT - Menu Problems

[JeffGuy]

I've got a seriously big problem.
I open my Sims 3, and it loads and then it comes to the main menu, where you can choose families or create a new game.
But instead of that menu coming up, the menu comes up in the format of creating a new game, with the options of like Twinbrook or Sunset Valley or whatever.
I re-loaded it, but there was the same result.
I restarted my Mac, and tried again. Same problem.
I shut down my Mac, and left it that way for a five minutes.
Then I reopened, and the same problem.
This is a serious problem for me.
Also: I've just had my dvd-drive fixed, and my graphics are on medium, I also didn't have any other large programs running like my Photoshop CS5 extend or anything.
You may also like to know: My disc is fine, and when I first played it, after I got my computer back (an hour after it was fixed) it was fine, but it was a bit jutty, meaning: stop-start very quickly. Like: stop.......start - Plays for a while - stop............start.
So...any help?
Should i install my Ambitions and reinstall?
Any help is really helpful.

[Metropolis Man]

I've got a seriously big problem.
I open my Sims 3, and it loads and then it comes to the main menu, where you can choose families or create a new game.
But instead of that menu coming up, the menu comes up in the format of creating a new game, with the options of like Twinbrook or Sunset Valley or whatever.
I re-loaded it, but there was the same result.
I restarted my Mac, and tried again. Same problem.
I shut down my Mac, and left it that way for a five minutes.
Then I reopened, and the same problem.
This is a serious problem for me.
Also: I've just had my dvd-drive fixed...

This seems to be coincidental, Jeff. Did you notice this new problem the first time playing Sims after your DVD drive was supposedly fixed?

[JeffGuy]

This seems to be coincidental, Jeff. Did you notice this new problem the first time playing Sims after your DVD drive was supposedly fixed?

No, it wasn't the first time. I played it for about half an hour before I quit because I had to run another big program.
It was the second.

[Swede1992]

How many save files did you have and how did the game exit to desktop? Did the game crash while saving or the like?