I updated both the Windows 10 client and the Ubuntu 16.04 server to the very latest releases and the problem has disappeared.

Thank you for your help.  My server may have been a little too old for the new client version I was using.




-----Original Message-----
From: X2Go Bug Tracking System <owner@bugs.x2go.org>
To: krehberg <krehberg@aol.com>
Sent: Fri, Mar 9, 2018 2:15 pm
Subject: Bug#1269: Acknowledgement (X2go server crashes on Ubuntu 16.04 starting at 2018-03-08)

Thank you for filing a new Bug report with X2Go.

This is an automatically generated reply to let you know your message
has been received.

Your message is being forwarded to the package maintainers and other
interested parties for their attention; they will reply in due course.

Your message has been sent to the package maintainer(s):
X2Go Developers <x2go-dev@lists.x2go.org>

If you wish to submit further information on this problem, please
send it to 1269@bugs.x2go.org.

Please do not send mail to owner@bugs.x2go.org unless you wish
to report a problem with the Bug-tracking system.

--
1269: http://bugs.x2go.org/cgi-bin/bugreport.cgi?bug=1269
X2Go Bug Tracking System
Contact owner@bugs.x2go.org with problems