title: Notepad++ NppFTP plugin fails to connect via SFTP
body: <p>So, i've been having this problem for a while now. </p>
  
  <p>Notepad++ NppFTP plugin fails to connect to server via SFTP with "[SFTP] Error during authentication: Invalid private key file". But the key file is 100% correct and i'm connecting fine with WinSCP. </p>
  
  <p>Any solutions?</p>