I looked at the first few pages of technical help, and while there were some problems that were similar to mine, none that I saw are exactly what is happening.
I have a windows laptop
No mods or CC
I have University, Ambitions, Pets, and Generations Expansion Packs
I don't think I have ever uninstalled/reinstalled the game, but the laptop is relatively new- I got it February 27 (this year), and installed the game the first day I got it
My sim had just graduated from University with a technology degree
My game is up to date
The Issue:
I don't know if all of these details matter, but just in case:
My female sim, Jenny, was going to graduate from University with a technology degree (perfect GPA). Her brother (C.J.) and sister (Lynn), who were attending Uni with her, went to watch. Jenny had invited her mom and some townie families (she lives in Sunset Valley) to come watch. When Jenny got to graduation at the Annex, there was a huge crowd outside. She joined them along with C.J. and Lynn. None of the invited people came. They stood outside the annex for hours, and finally went inside for around 2 seconds, then came back out. I tried to get Jenny to go back to graduation because she hadn't gotten the new trait (I am not sure how that works, I just got Uni about 2 days ago). The graduation option was no longer available, and I couldn't click on Jenny when she was selected (I wanted to see if she could change into her graduation robes). I decided to have Jenny and C.J. socialize a little before they went home to become best friends. I told Lynn to paint street art. When Jenny and C.J. became best friends, their wishes to become best friends didn't fulfill. Then C.J. went to travel home. When he went back to the dorm, he just stood there. I tried to see if Jenny and Carole were coming, but I couldn't select them. When I went to the main menu and back, the selector panels had turned green and they were stuck, Jenny just standing there, and Lynn doing street art. C.J is the only one I can control. Resetsim doesn't work, and I guess I can't evict them because they are still in University. Sorry for the huge paragraph, but I tried to add as much detail as I could. Please help!!