Version:4.1.2.2 (Qt - 4.8.6)

By mistake I chose the wrong IP and tried to connect to IPMI interface instead to correct one where x2goserver lives.

Instead of getting any error message (username and password was obviously wrong) the client crashed.

IPMI is an out-of-bound management interface for certain motherboards. The on I tried to connect by mistake, has ssh server on port 22, and after correct login identifies as:

Insyde SMASH-CLP System Management Shell, versions
Copyright (c) 2015-2016 by Insyde International CO., Ltd.
All Rights Reserved

--