Similar to other aging bugs, my sims stopped aging randomly. It started in a game where I had a family with a toddler and twin infants. I think it started when the first child was born. I waited the normal time but she still wasn't aging up, so I aged her up with a cake. Now I can't age her up with cake at all (she doesn't appear in the list for Blow Out Candles). The infants also don't age at all, as the age bar remains unfilled. The adults will age by a day each time I reload the game, but then they won't age anymore as I play them.
I thought it might just be the game I was playing, so I switched to another file. The same problem persisted, even with a young adult who had 0 days till age up.
I have Supernatural, Late Night, University, Pets, and Generations. I have no mods, and already uninstalled all my EA store content. I've tried a couple other methods discussed in various forums such as turning aging progression on and off, with no effect.
Please help! I'll be forever grateful.