Make sure this is in your launch.ini
livestrong = false
Then if you have an hour or 3 you can delete your game paths and then add them again and it'll rebuild them all and go and get your pictures and the like, or you can use "refresh art work"
Tried it on mine and it's getting all the covers.! I have 2000 items to go...lol...so it does take it's time but I'm not complaining!