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

For what it's worth, @AndreasPrang, your answer worked when all of the above didn't. I could see the expired certificate was not anywhere in the keychain, yet when I did a build, Xcode said it was. Deleting the provisioning profiles (all of them), selecting my name in the Team section and clicking the refresh icon in the lower right of the organizer also did not help. Restarting Xcode didn't help, but shutting down XCode, deleting ~/Library/Developer/Xcode did. When I restarted XCode, it rebuilt everything and was happy.