title: Why is the "Load putty key" field in TortoiseGit disabled?
body: <p>I would like to connect to my repository using an SSH key instead of a username &amp; password.</p>
  
  <p>However when I try to do this in TortoiseGit I can not enter the key because the "Load Putty Key" is disabled. Can anyone point out why this is happening and how I can enable the field?</p>