Hello all, it's been a while.

Recently when I play my game, two sims I play with have white lines going through their hair (shown here; it's more apparent in their icons). They currently wear non-CC hair, and it continues to appear even when I change their hair. As far as I'm aware, they're the only ones affected. What can be done to fix it?

I have seen that too, and those lines are particulary bad on a hair I really love. I use it anyway and edit out the nasty lines in Photoshop Elements on screenshots. I'm not 100% sure what they are, but I suspect they could be edges of some polygons the meshes are made of.

I think I fixed it. I simply saved an "uncorrupted" model of the characters from an early save (Always make backups, kids!) and replaced them in CAS. Now the hair doesn't have that problem.

I want to give a final update. After some troubleshooting, it turns out the real cause was from this wedding ring. My older sim models didn't wear it, which is why I thought it was because the new ones got corrupted somehow. My guess is there is too many polygons in it, causing the meshing conflicts Cororon previously mentioned.

Good that you were able to fix it!