Downloaded the hotfix update for TS4 06/03/25, and launched the game - no issues whatsoever. Completely fine. Playing with mods, CC, whole shebang - fine. Got my teen aged up to YA (I play generation...
Ideas
I narrowed down the cause it’s a mod from Kiara Sims , I don’t know which one of her mods is the cause, because I just kept her folder out, because I do want to have some type of gameplay.
At least it was the cause for my game.