Game is no longer loading with university pack

Hello! 

So I’ve been playing with this family for a while now and I’m now on my 3rd generation. Recently I downloaded the university pack along with strangerville and another stuff pack. I didn’t touch the university pack until a few days ago. 

when I got my sim to go to university, everything was going great, the game was working properly (AND THIS WAS AFTER THE UPDATE) and I was enjoying the game a lot because the concept of university is great in my opinion. 

anyways, this morning I went to go load up my game and the first and second loading screens were fine, but when it got to the last loading screen it just didn’t load. At all. 

this is only happening with my one save where I’m playing with university. My other saves and if I start a new game all works normally. 

if anyone has any idea what’s going on or any suggestions about what to do, please let me know. I just wanna play the game. 

(also I have tried repairing the game but that’s all I’ve tried so far, cause I’m not great with computers) 

also I play on a Mac.