Sims 4 gets stuck on loading screens

mama1014  I've split your posts into their own thread because the original thread was getting a bit unwieldy, and it was difficult to find your posts in the mess.  (Not your fault, just the nature of the forum at the moment.)

Does the lot you're trying to return to have the Off the Grid challenge?  If so, please remove it, which you can do by accessing Build mode through Manage Worlds.

If this doesn't help, please open Documents > Electronic Arts > The Sims 4 and delete any lastexception file you see.  Try again to load this lot, and if the game hangs, look for a new LE.  If you find one, please provide it here.  The best way is to delete the first line of the file and attach it as-is.