My Idol3 camera won't open after update?! HELP!

I'm with Cricket/AT&T and only got to upload this update a few weeks ago. Ever since then my Phone's Camera will not open! Why?! I really need my camera and I'm excited to see how much better it is, if that possible. I have tried opening it from the shortcut and the app itself and all it will do is flash the camera and instantly close. I'm not a tech buff but My Son is and he can't figure it out either.
Please try an help. Please!
Thank You Very Much for Your Time and Help!
B.Z.

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