All my apps that i\'ve created so far do this. It does nothing to the app or being able to run it but it\'s just annoying always having that 1 warning.
I\'m Using Xcode
I had this problem because a provisioning profile I used was signed with a certificate that was revoked/expired. First, go to the member center and delete expired and invalid provisioning profiles. Regenerate the ones you need. To clean up Xcode, go to Preferences-> Accounts, select your account.
Click view details.
Right click any profile -> Show in finder. Delete all of them. Then go back to XCode, close details and reopen (to refresh) and re-download the ones you need (there'll be a download button for each profile).
Warning gone. Xcode might complain about code signing issues, but clicking "Resolve" automatically clears this up.
Then everything worked.