Xcode 4 -reinstalls keychain certs that I delete

Question

I am getting this error:

CodeSign error: Certificate identity \'iPhone Developer: XXX\' appears more than once in the keychain. The codesign too

Answer 1

Deleting provisioning profiles in Organizer's library, additionally, you should delete iPhone developer certificate in Keychain Access. (The certificate's name is probably like "iPhone Developer: XXXXX ..." and indicated by red X sign, as expired)