Star Wars Expansion Sound & Outfit Glitches

@kittell17  I haven't heard whether the usual approaches work to add the sims to your household or not.  For CAS, one thing I'd try is changing their voices and then undoing the change, so (in theory) they go back to having their default voices.  If it doesn't work, it's easy to quit without saving.

I'm not aware of any hard limit on the number of saves you can have.  If you're worried you have too many though, just move your entire saves folder somewhere else.  The next time you launch the game, a new saves folder will spawn, and you can create however many saves for testing purposes you want.  If you don't feel like keeping the results of those tests, you can trash the new saves folder and put the old one back, no harm done.  If you do want to keep a new save, you'll have to rename the file itself, but that's easy.