Bug reports without an attached log file are usually useless.
Re: Translation missing?
Some of the error messages coming from SSH code of PuTTY are hard-coded and thus not localisable.
I'm using WinSCP 3.7.5 in French, and I've noticed that the dialog box opened when the peer has reseted the connection is not translated. Well, just the text "Network error: Connection reset by peer" is not translated.
Buttons and dialog title are.
Don't know if it's normal.