This happens to me too, just a little bit different. My sim aged uo and I wanted to change their outfits in CAS but then it gets stuck in the loading screen. I can't exit out so I have to force quit the game. It also plays 2 songs at once. I've tried entering a new save and trying to enter CAS but its the same thing. It gets stuck every time.
@ZuzuMagoozu2zu Not uncommon if you have outdated mods. Have a run through Broken/Updated Mods & CC - there's a lot there, at least some of which can cause this when outdated. Make sure to delete old versions and the localthumbcache file.
