Great app I've used it for months. Don't know if this is the best place to report this bug. Recently had to back up all puzzles  about 6 months worth  then reset phone to factory reset and reload the app. Copied all cw files back and they appeared fine. Played about 12 of them  the did CLEANUP  and it wiped them all except the ones I'd downloaded after the reset.
June 10 2015