WinSCP COM automation fails

Hi, I have registered the WinSCP library as per the instructions on the WinSCP site:

Register WinSCP COM

I have tried executing the following code to simply open and close a connection:

function testWinSCP() {
  var session = Sys.OleObject("WinSCP.Session");
  var sessionOptions = Sys.OleObject("WinSCP.SessionOptions");
  sessionOptions.Protocol = session.Protocol_Sftp; // Not sure if correct
  sessionOptions.HostName = "10.23.0.41";
  sessionOptions.UserName = "oracle";
  sessionOptions.Password = "Orac1e";
  sessionOptions.SshHostKeyFingerprint = "ssh-rsa 2048 25:e2:6e:db:39:9e:50:e0:6f:57:7f:54:07:0a:a2:a1";
  try {
    session.Open(sessionOptions);
  } catch( e ) {
    Log.Message( e.message );
  } finally {
    session.Dispose();
  }
};

but this fails with in an "Invalid procedure call or argument" Exception being thrown.

What else do I need to do to get this going? It doesn't help with the debugger not displaying any methods or properties of the objects.

I believe it is actually creating the objects as setting sessionOptions.SshHostKeyFingerprint to a string that does not match the pattern for ssh throws an Exception stating such.

Regards,

Phil Baird