Hello everybody,
I get the same issue during my first Get to Work play and I find a temporary solution to wait before this patch you talk about.
I backup my files and I reinstall my game without installing Get to Work right away.
In CAS I made try all my CC outfits to my sims, every color of each, to create the correct thumbnail to each of them.
Then I install GtW again and all my CC thumbnails were correct and not replaced by those annoying alien ones.
I takes hours when you love CC outfits but it's quite better now so ...
Hope it helps ...
