Hi,
I know I don’t have my place here anymore ( I’m the shame of simmers community) and that question might not have its place here either.
Some of my sims3pack don’t show-up in my game anymore, but they are in the launcher; cf this Hello Kitty outfit

I use to have it before

I have the same problem with some wallpapers.
I downloaded some clothes and it’s the same problem, I have them in the launcher, but not in the game.
They’re listed under “style” instead of “full outfit” or “object”
All these stuff are from the exchange, I don’t have this problem with stuff from others websites.
These files are not corrupted, I tested them and I can’t install corrupted files, I have some error messages like “missing addon” for a thing base game compatible” or “update needed”….I have the lastest version.
My game is an official one, not a pirated one…I’m not like this.
What does it mean ?