gistfile1.txt

Unable to simultaneously satisfy constraints.
	Probably at least one of the constraints in the following list is one you don't want. Try this: (1) look at each constraint and try to figure out which you don't expect; (2) find the code that added the unwanted constraint or constraints and fix it. (Note: If you're seeing NSAutoresizingMaskLayoutConstraints that you don't understand, refer to the documentation for the UIView property translatesAutoresizingMaskIntoConstraints) 
(
    "<NSLayoutConstraint:0x178095270 H:|-(0)-[PagedScrollView:0x147e31190]   (Names: '|':UIView:0x1701868d0 )>",
    "<NSLayoutConstraint:0x1780952c0 H:[PagedScrollView:0x147e31190]-(0)-|   (Names: '|':UIView:0x1701868d0 )>",
    "<NSAutoresizingMaskLayoutConstraint:0x178098c40 h=--& v=--& H:[UIView:0x1701864c0(320)]>",
    "<NSLayoutConstraint:0x17009e3c0 camImage.height == 0.5625*UIView:0x170187f90.width - 180   (Names: camImage:0x147d0d390 )>",
    "<NSLayoutConstraint:0x178c8cd00 UIView:0x170187f90.width == VerticalFlowLayout:0x147e76dc0.width>",
    "<NSLayoutConstraint:0x170a8b770 H:|-(0)-[VerticalFlowLayout:0x147e76dc0]   (Names: '|':UIView:0x170186e80 )>",
    "<NSLayoutConstraint:0x170a8b7c0 H:[VerticalFlowLayout:0x147e76dc0]-(0)-|   (Names: '|':UIView:0x170186e80 )>",
    "<NSLayoutConstraint:0x170a8d9d0 H:|-(0)-[UIView:0x170186e80]   (Names: '|':UIView:0x1781898c0 )>",
    "<NSLayoutConstraint:0x170a8da20 H:[UIView:0x170186e80]-(0)-|   (Names: '|':UIView:0x1781898c0 )>",
    "<NSLayoutConstraint:0x179488660 UIView:0x1781898c0.width == PagedScrollView:0x147e31190.width>",
    "<NSLayoutConstraint:0x17189d2e0 H:|-(0)-[UIView:0x1701868d0]   (Names: '|':UIView:0x1701864c0 )>",
    "<NSLayoutConstraint:0x172893970 H:[UIView:0x1701868d0]-(0)-|   (Names: '|':UIView:0x1701864c0 )>"
)

Will attempt to recover by breaking constraint 
<NSLayoutConstraint:0x17009e3c0 camImage.height == 0.5625*UIView:0x170187f90.width - 180   (Names: camImage:0x147d0d390 )>