> On Mar 16, 2016, at 5:35 AM, Bill Cheeseman <wjcheese...@gmail.com> wrote:
> 
> As to my question, I thought on it overnight and figured out that the only 
> affected constraints would be those from any view in the affected scenes to 
> their superview in the view hierarchy. That will substantially simplify the 
> repair job. I'll try that later today and hope I'm right.
> 
>> On Mar 15, 2016, at 3:46 PM, Lee Ann Rucker <lruc...@vmware.com 
>> <mailto:lruc...@vmware.com>> wrote:
>> 
>> Start by giving all your views identifiers, that'll make them easier to 
>> track down; the error message will use the name and you can search for it in 
>> IB.


Unfortunately, after adding identifiers to all views I can see in my Interface 
Builder storyboard, the same error message is logged about an invalid 
constraint, and the error message uses none of the identifiers. This suggests 
to me that the storyboard file became corrupted when I deleted and reinstalled 
some segues and renamed some view controllers.

Is it possible for a storyboard file to contain "ghost" constraints that can't 
be seen in Interface Builder but prevent the application from running? Is there 
any way to debug this or to remove the errors? This is a large, complex 
storyboard, and I sure don't want to have to rebuild it from scratch.

Here's the error message again:

"2016-03-15 14:28:14.801 UI Browser[93092:22589120] Failed to set 
(contentViewController) user defined inspected property on (NSWindow): Unable 
to install constraint on view.  Does the constraint reference something from 
outside the subtree of the view?  That's illegal. 
constraint:<NSLayoutConstraint:0x608000085910 
'NSTabViewController-TabViewLeading' NSTabView:0x100d18d50.leading == 
NSView:0x600000120c80.leading priority:749> view:<NSView: 0x600000120c80>"

-- 

Bill Cheeseman - wjcheese...@comcast.net

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