I update to IOS 7 beta 2 on my 128 gig iPad with retina and all I get is a black screen when trying to use the camera. Tried to update multible times with same result. Rebooting iPad after update did not help. I downgraded back down to IOS 6.1.3 and the camera works again. I don't have this problem with my ipad mini (wifi only) or my iPad 3 64 gig wifi and cellular. Anyone else experience this or know of a fix?