62c1a628ccbfed5d Did you install the mods and revert play to when your sim was still in the University world? It's very difficult to fix the game once the travel transition has already failed, so your best bet here is to revert to before you sent your sim home.
Even if you've never made a backup, the game keeps the files from the second-to-last time you saved. Inside Documents > Electronic Arts > The Sims 3 > Saves, you'll see a folder with your save name and another folder with the same name and a .backup extension. Change the name and delete the .backup, and that save will be available to load from the Main Menu. That only helps if the backup is from before your sim went home though.
If you do have a save from the University world, I'd suggest adding NRaas MasterController and Register as well. Once you load the save, empty your sim's inventory as much as possible—having a few items is fine, but not much more. Let the game clock run for a few sim-minutes, then click the admin building or an in-game computer and select NRaas > MasterController > Town Options > Reset Everything. When the reset is finished, and you'll get a notification, let the game clock run for a few more sim-minutes and then send your sim home again.
I would also suggest turning down your graphics settings to the minimum before you attempt the travel transition again. Do so at the Main Menu, then quit to desktop before loading the save. You can switch back to your usual settings once your sim is home again. Please also delete the five cache files in the Sims 3 user folder:
