When I open Candy Crush, it starts on the loading screen and then shuts down. I have no problems with my other King games (soda and solitaire). I have recently beaten a level I was stuck on for over a year - I connected to Facebook but my progress isn't updated there. My iPhone is completely up to date, as is the app. This has been going on through multiple updates over 4 weeks.
It is not a memory issue - I have the 64g phone with over 20 gbs left.