If you do run into this again, do a 50-50 test. Even a mod cleared for 1.102 or updated since 1.102 might have issues not previous noted. You might also have hit an issue because of mod conflicts, or simply an issue a modder or another Simmer hadn't found. Even on Curseforge, a mod isn't guaranteed to be working.
The one issue we've had recently with Gallery Sims is with ones with a fourth trait, which has caused issues in CAS. This should be fixed as of 1.102. The bug thread for that is here: https://answers.ea.com/t5/Bug-Reports/FIXED-GRO-Wrong-names-and-CAS-Corruption-after-gaining-a-4th/m-p/12395752/highlight/true#M243114
In general, I advise against merging packages. There's no gain to performance from it, you can easily end up with duplicates, and you can end up with mods you can't find to remove.
So merged packages of mods through the gallery can become corrupt more often? I don't merge them manually anymore. I used to. I stopped doing it so I could figure out the problem I was having recently and that was like a year ago. I do have some website downloaded mods, though. None of them were downloaded on an insecure sight and all have been scanned thoroughly.
@netherkrow It's not that they become more corrupt - it's that you can't see in them or find their contents in a search. So you can end up with two copies of the same file, with mods/CC that are outdated because of a game patch but you can't delete just that mod/CC, and with mods that you end up with earlier and later versions of. And that comes with no benefit to you as a player, because merging CC files doesn't improve anything in-game. And older merged files you find somewhere online are more likely to contain content that's already outdated/broken.
Of note, no CC or mods is downloadable from the Gallery for Sims 4, only from outside sites.
