If I try to create a new game in the Sims 3, after I select the household I wish to play with and click on the purple check mark the game stays in edit town mode and refuses to load the family.
I don't think that's an Awesomemod bug. I just had the same thing happen, and I'm not running Awesomemod.
No, that's an Ambitions bork! I had no CC, hacks, I was playing vanilla and the same thing happened. Only way to get around it, was to go to Main Menu and go back into the game that way. Or else, quit and start again.
That has happened to me a few times but I don't have to go all the way back to the Main Menu. When I click the "..." button there's a half-second pause followed by the lot loading correctly.