title: Got error "The identity used to sign the executable is no longer valid."when debug on iPhone
body: <p>I am using Xcode 7 beta 6 on Yosemite, but I have encounter the problem</p>
  
  <blockquote>
    <p>The identity used to sign the executable is no longer valid.</p>
  </blockquote>
  
  <p>Error when I am trying to build my app on my iPhone. The detailed information is:</p>
  
  <blockquote>
    <p>Please verify that your device’s clock is properly set, and that your
    signing certificate is not expired. (0xE8008018).</p>
  </blockquote>
  
  <p>So I can't debug in my iPhone device now.</p>
  
  <p>Anyone has any idea for this?</p>