TWebCopy: Unable to download single file using FTP

I can download all the files in a folder using TWebCopy via FTP, but when I attempt to download a single file via FTP, the progress dialog briefly appears but the download does not start.

I based my code on the code as provided in the example:

  WebCopy.Items.Clear;
  with WebCopy.Items.Add do
  begin
    FTPHost := 'redacted';
    FTPUserID := 'redacted';
    FTPPassword := 'redacted';
    URL := remotefile;
    Protocol := wpFTP;
    FileDate := FileAge(localfile);
    CopyNewerOnly := True;
    TargetDir := ExtractFilePath(localfile);
  end;
  WebCopy.Execute;

I have also tried with CopyNewerOnly := False; but this does not make a difference.

I have resolved the problem - must use "/" instead of "" in remote paths.

Thanks for informing