Hello!
I am recently having an issue with my sims not aging. It seems to be the whole neighborhood not being able to age. I am able to age them by buying them a birthday cake but doing this for all of the households in the neighborhood is tedious. I have tried re-installing basic game and expansion packs and it was working for couple weeks but now it has started again. I have created a completely different neighborhood and after a couple sim days they have stopped aging.
The expansions I have installed is late night, generations, pets, seasons and university life. I have no custom content installed or mods applied to the game. Any suggestions is greatly appreciated!