AIR 16 launch fail on ios 7.1.1 & 7.1.2

Due to the Apple's requirement for the 64 bit version,  our latest app has compiled by AIR16 , but after released on appstore, a lot of user complained that our app can not launch on some of ios devices, especially on ios 7.1.1 & 7.1.2 , and also some jail-breaked devices, this never happened before on AIR15 or earlier compiler, we are receiving overwhelming negative comment on appstore.

Our app include an ANE module will create an ios native videoplayback to play a h.264 video after app initialize, I guess maybe there is a problem for actionscript invoke ANE methods at ios 7.1.1, therefore the app froze at the  video playing process. but unfortunately we don't have a ios 7.1.1 device to do further research...