How can I add a device to development portal in Xcode 6?
In your build settings, set your provisioning profile to automatic. Code signing identity to automatic as well.
In some cases the xCode tries to fix both the main target and the "tests" target, but fails to properly sign the tests target. In such case, for demos downloaded from the internet, I just delete the tests target.
@SeniorShizzle I think that the reason that it's showing like that for you is because your phone is running on a version lesser than the Deployment Target set in your app (Xcode -> YourAppName -> General).
Sorry that I couldn't reply as a comment btw. I'm not allowed to do that yet.
I found the solution. Delete 'iOS Team provisioning profile:*' in iPhone configuration utility.
and try to run app then you could see fix issue.