Xcode 5: Code signing entitlement errors
The solution lies in the new option in Xcode 5 which says provisioning profile. Just set the project target's provisioning profile to the right one and it'll work.
If you are like me and you think you tried EVERYTHING, archived your project over ten times, banged your head on the keyboard and still get this error. Please do yourself a favor and simply Restart XCode, it worked for me. Sometime Apple... I hate you.