UIButton with IB_DESIGNABLE throws runtime attribute warning and does not render in Interface Builder

Question

I\'m running Xcode 6.1 and I have been using IB_DESIGNABLE with IBInspectable for quite a few projects already but all of the sudden it just doesn\'t work anymore. I have create

Answer 1

How I personally fixed this:

In the identity inspector in User Defined Runtime Attributes I noticed that I had an old IB_Inspectable element that I had deleted from my code, but it was still in there. Removing it with the - button got rid of this error.