Codesign: What are unsealed contents?

Question

I have just upgraded to XCode 6 and tried to build my Developer ID signed Mac app. However, I now get the following codesign error:

unsealed contents present         


        

Answer 1

In my case, I was trying to sign an app with some old frameworks inside. None of these suggestions helped. Turned out I had to remove the PkgInfo file from inside a framework to get this message to go away.