Some problem for WinSCP

I'm use Simple Chinese Language Version 4.2.3 Build 494
That always Popup Message "the file TunnelPrivateKeyEdit not fond" when I make to connect to FTP server.
Please tell me how to setting or this is a bug?

Please send your reply to my e-mail : uusko@163.com

Where did you get the translation?

Others, do you have the problem as well?