about an hour ago, I started up the sims 4 game for the first time in a while and went straight to creating sim characters. when I tried editing their clothes it wouldn't let me and the only thing I could edit was their hairstyles. I'm unsure if I need to buy a mod(?) for me to be able to change the clothes. I decided to create the sim characters just the way they were generated and wanted to see if I could change their appearance with a wardrobe, but it still didn't work, and I couldn't even change the hairstyle.
all I know is that when I first got the game a couple years back, I could play it perfectly and I had no problems like this.
Do you have any Mods or CC? If so move your Mods folder to the Desktop and delete localthumbcache.package. Then test the game.