Solved
a lot of bugs after the high school pack release update
my game has been very very buggy. when my sims get out of bed, the blanket stays up like there's someone there, but there's not. all of my buttons are invisible, they're there, but invisible. sometimes my sims will become embarrassed by their significant other when they're sharing a bed. i can't change the color of clothing items in CAS. the buttons in CAS are also invisible. overall, it's been very glitchy.
Move your Mods folder to the Desktop and delete localthumbcache.package. Then test the game in a new save.
If it works now check for updates to your Mods and CC. Add it back a little at a time while testing until you have found all that are broken.
