I have the same issue. I just installed University one week ago, I've been playing everyday but I had an issue starting yest (Monday)
my male character and his father lived with a female roommate.
The male character had a privatewedding with his fiance and then I saved and quit after his new wife and daughter moved in.
I saved then quit.
The next day the "box" for thesims are all green except for the new wife, meaning I can click on the new wife but not the other sims because they don't have their icon in their box.
Now all the sims are visible but frozen in the house but the new wife can be controlled, and has her icon in her "greenbox" .
I reset my male sim,tried edit town mode, nothing worked. I went into edit universitymode and came back to my household.
NOW.....when i click on the house hold it showed the whole family was there "Male,Father, roommate, plus new wife." on the portrait.
Once I choose them as my acvite household I only see the father and the males new wife,I don't see the male character or the daughter at all.
The fathers icon is now present and is not just the green box, but his name is showing up as his granddaughter/sons daughters name and not his given name.
I checked the wife's friends list and its showing my main male character is at the university and in the relationship/friendships status it is showing that its her boyfriend. When I hover over her name though is shows shes married to "Jason" which is the main character/males name.
So I lost two of my characters? what the heck?
I can't even find the daughter, lol, idk where shes living, I can only text her.
Plus now the father lost his name and has the granddaughters name.
His icon is in the green box but I still cant click him to control him.
I've been able to tolerate a lot of the sims glitches in the past, Even the one where it gave you an error when saving
but losing characters and relationship stats, this is really frusterating.
I have had custom content, no mods. Ive had the custom content for a while now and haven't added more content in 6 months.
Plus the sims was working fine for a week.
Let me know if you hear anything. thanks or if you have a similar problem, Sorry This is so long, When I am on a rant i don't shut up lol.