title: "Key is invalid" message on GitHub
body: <p>I have generated SSH keys for a new server installation according to the procedure outlined <a href="http://help.github.com/mac-set-up-git/" rel="noreferrer">here</a>. However, when I copy the contents of <code>id_rsa.pub</code> to my keys list on GitHub, I get the error message "Key is invalid. Ensure you've copied the file correctly." </p>
  
  <p>The generated key <em>is</em> valid, and I am copying it exactly as is (all in one line with no whitespace at the beginning/end).</p>
  
  <p>Anybody have an idea what could be going on?</p>