CodeSign error: Certificate identity 'iPhone Developer: XXXX (12345678)' appears more than once in the keychain. The codesign tool requires there only be one.
So I go to my keychain and delete it. But I get this error every time I restart Xcode 4 and some app is adding the expired old certificate back into keychain. Any ideas why and which app?
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I just had the same problem. It has been fixed. It came after I submitted an app and installed a few certificates to sign the app.
Quick Fix: Open up KEYCHAIN ACCESS > click on MY CERTIFICATES> in there you will probably see iPhone Developer: . You will probably see it TWICE! Select the one with the earliest Expiration date, right click and select DELETE.
Restart Xcode if you haven't. Works now. :)
Happy Coding.
