I've had the aging glitch on a few occasions. I've been informed that it is (supposedly) a result of The Sims 3 Generations expansion pack. Changing the aging settings didn't work. Moving my family into a new home didn't work. Restarting my game didn't work. I reinstalled my games on one occasion, but for what? Just to haveit happen all over again?! I mean, who wants to just KEEP ON STARTING OVER?! -_-
I looked on the internet for what felt like ever and I found video on YouTube where the creator of the video explains a simple fix: Making a copying your town. Guess what? It worked! (At least for me.) When your game starts up and displays your saved family simply click on the blue icon by the town image. There's only two: the one that looks like two sheets of paper overlapping and the trash can icon.Obviously the trash can one will delete your town, so do NOT use that one! Click on the one with the two sheets of paper overlapping (if you move your mouse over it, it should say "copy" as it is the COPY icon.) After doing this you'll be prompted to give the town a name and then save it. (I personally saved the copy separately first to ensure everything worked out.)
When I navigated to it, everything was EXACTLY as before and my sims aged again! I kept my progress in everything and didn't have to restart!
Hope this helps! It's such a simple solution, so it's definitely worth a shot! 🙂