title: Sublime Text 3 on mac save read only, is not requesting password
body: <p>I'm trying to save a system file with ST3, /etc/hosts but it throws an error. On another mac machine it ask me for the password and saves normally, but on this new installation it just show this error:</p>
  
  <pre><code>Unable to save ...
  Error: ... is readonly px_administrator_copy_file(/tmp/.sublbca.tmp, ...)
  </code></pre>
  
  <p>Any idas why is not asking for sudo password?</p>