Entitlements are not valid

Question

Recently, I have upgraded my iPhone SDK OS from version 2.2.1 to 3.0 version. After that, while building my application, I get an error that the provisioning profile has exp

Answer 1

You also need to make sure that you have an unexpired provisioning profile, which foiled me on this one for a while (Ad Hoc provisioning profiles seem to expire after a year). Error message is the same, but it has nothing to do with not having a valid Entitlements.plist file.