title: Error when trying to obtain a certificate: The specified item could not be found in the keychain
body: <p>I was having a problem with codesigning my apps, so I deleted all the keys from the keychain. Then I went to <em>Certificate Assistant => Request a certificate from a Certificate Authority</em> (to create CSR for a new certificate).</p>
  
  <p>So enter my email address and here's what I get:</p>
  
  <blockquote>
    <p>The specified item could not be found in the keychain.</p>
  </blockquote>
  
  <p>What am I doing wrong?</p>
  
  <p>P.S. When I'm trying to <em>Create a Certificate Authority</em>, I get the same error.</p>