I haven't played the game in a few weeks. Well I just went back to play and noticed that hardly any of my expansion pack items in CAS will work. The photo won't fully load and if I click on the items for my sim to wear, it shows up the red, white and black error on the sim itself. I tried running a repair on the game in Origin but it did not fix it.
If you have mods installed that might be causing the problems. There's been a fair few updates recently that may have broken your mods if you've not updated them.