I have installed OTA-16 on my Nexus 5, and overall, it looks brilliant. Well done to everyone involved.

However, I have one problem. It might be coincidence, but since the installation, Dekko2 has become unstable. On opening, the Dekko2 logo appears, as expected, but then the screen goes blank and the app hangs. New incoming messages continue to be flagged by 'Notifications', but I can't actually open any of them. Any thoughts?

@stanwood Oops! I have always checked for updates via the Settings App. After your comments, I tried looking at installed apps via Software Centre, which listed 5 pending updates, including Dekko2. Having applied those updates, it is working fine again. Thanks for the important clue.