why Xcode 7.2 crash 'Could not instantiate class named IBNSLayoutConstraint'?

Question

*** Terminating app due to uncaught exception 'NSInvalidUnarchiveOperationException', reason: 'Could not instantiate class named IBNSLayoutConstraint'

I just update Xcode to 7.2 then i start to check is everything alright. but I have this error and it crashes. I dig this problem, everybody said that "Make sure you don't have any constraints installed for views that aren't installed." but I don't have any uninstalled constrains. and I don't have any NSLayoutConstraint outlets. Thanks a lot.

Answer 1

Select Storyboard Disable Size class resolve my problem. Hope this will help you! Thanks After build your project you can again enable size class.

Answer 2

In my case I had "padView" that was not installed in any/any size class and was installed in regular/regular size class, but it's subviews were installed in all size classes.

"PadView" settings:

"PadView" subviews settings:

When I changed "PadView" subviews installation settings to the same as "PadView" settings my problem was resolved.