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

I had the same problem and what worked for was deleting the contents of the DerivedData folder. Xcode doesn't say which resource is causing the problem, so I rebuilt everything from scratch. Clean didn't work either.