Missing necks and faces, most likely a corrupted save?
Issue: Townies have been spawning with missing necks or faces, as well as my played sims when they age up to teenager. The only way to fix them, is to go into CAS and go to each category (everyday, formal, active, hot weather, etc.) and manually put in a premade face on each one. Genetics can be tweaked as normal after that.
Attempted fixes: I checked all my mods for updates, and any that needed updating got updated. I deleted avatarcache.package, localthumbcache.package, cleared the cache folder, deleted Resource.cfg from the mods folder. Still had the same issue. I then went through and completely removed my mods, and put them back in a few at a time and checked each in a brand new game without saving, repeated until I went through all mods. There was no issue with missing necks or faces. But when I went back to the save I've been playing on, the problems persists.
Conclusion: I think my save might be corrupted, but I don't know what more to do to try to fix this. I'm a few generations into a legacy so I really don't want to have to start over on a new save.
@NymiraB It's often necessary to fix affected sims after removing mods or custom content. In this case, perhaps taking them into CAS and changing a couple of details would be enough to fix them, that is if you care about them enough to work on them instead of just getting rid of them entirely.