I play on Long, but I do turn aging off for the duration of uni. I have had at least six of my Sims in uni all at the very same time. I make a point to enroll them for four classes each term. That means it's only three weeks Sim-time and then they can get on with their lives. I do it all at once, too. No breaks. That way, when it's done, it's done. (And we can all relax. ;) )
I've had to restart one particular game save a few times since uni came out but not due to that pack, but other things that just went horribly wrong. One was a mod I was experimenting with that took away one of my primary Sims and there was no real way to get her back. (The mod was borked) I ended up using a cheat to return her to the household, but then I couldn't get into the lot after that. That was that. Another time it was the Patch from EL that borked my game save. Took me jumping through a bunch of hoops before I finally started a new game save to get my updated mods and stuff working right.
I decided, this last Patch, to avert the problem. Of course, I pulled my Mods folder and backed up my saves/Tray prior to installing said patch. Then I started a brand new game save, before replacing the updated mods. All is well. My primary Sim (brother of the lost Sim) is now a teenaged Global Superstar and the kids (four teens born one after the other) are almost ready for uni. Do I go there again? Or do I cheat their degrees (gotta love MCCC) and let them get on with their lives?
Hope this helps you in some small way. Happy Simming!