Thread for new members to post their Sims 3 game issues (2020-22 version!)

Hello, I am having an issue with my game I am stuck with the Materilizng Materials error I know what causes it and I used ccmagic to find the name of the files however when I check my downloads folder I search for the files but they don't exist in my sims3packs or packages and I can't change the colors of clothing and stuff in the game because of the error but I can't fix it because the files can't be found in the folder.