@NewYorkCityTM If you haven't added NRaas Traveler, please do so now, before you try to get your sims home from University. It's best to have Traveler installed before they leave for a vaction or University term, but it may still help here. Either way, I'd like to know what other NRaas mods you have installed as well.
For the issues evicting a household, is the problem only the one household, or are others affected too? You don't need to test all of them, just a few. If you have NRaas MasterController installed, does the Evict command, followed by going to Edit Town, cause a crash? Please test it and let me know.
For the length of the sims' lives, where are you trying to change it? This only works while a save is loaded, and it may not work in University; I've never tried it in a vacation world.
Also, I moved your other post, about World Adventures not loading, to a thread about packs being installed but not showing in the launcher. It's not something the user can fix; you'll need to contact support.
It would be helpful to know whether WA was originally present in these saves, because removing it may have corrupted the saves and be causing some or all of the issues.