Hi,
depending on how your 'pages' are organized, this could be the iOS 6 requestAnimationFrame-events bug - iOS 6 stops firing this event, when there are several scripts on the html page that are listening to this event - and when this event stops, then also krpano stops.
Version 1.16 includes an automatic workaround for this iOS 6 bug, so when this bug is the reason, it should work with this version.
Best regards,
Klaus