I m stuck with this error:
Code Sign error: Certificate identity \'iPhone Developer: My Name (xxx)\' appears more than once in the keychain. The codesign tool requir
Solution:
In keychain: I’ve found that if you switch to the “All Items” view, on the left hand side, the deletion seems to work every time. But maybe that was just blind luck. Even if it fails, the act of switching back and forth between “All Items” and “My Certificates” seems to force KA to refresh the view, and tells you if the delete has “worked” yet:
link:
http://viggnesh.com/blog/problem-faced/