[MOD RELATED] Blank grey/green-backgrounded boxes in CAS

I just got the 4 columns CAS mod, and when I installed it, the thumbnails for certain items are covered up by a white block, but not all of them. How do I fix this? I have a lot of cc clothes, hair, etc. installed, and a CAS background if that helps. I got what it said was the latest one on Mod The Sims. Thanks to anyone that tries to help!! ⭐