==== The command built so far is: ====

xterm -iconic -geometry 80x35 -title x11vnc-console -e x11vnc -gui none 2> /dev/null &

*** To run the above command on machine "workstation-10-x86-64" (thereby
*** starting x11vnc) press "OK", otherwise press "Cancel".
Starting x11vnc in an iconified xterm with command:
  xterm -iconic -geometry 80x35 -title x11vnc-console -e \
    x11vnc -gui none 2> /dev/null &

No reply from x11vnc server.
trying again ...
No reply from x11vnc server.
trying again ...
No reply from x11vnc server.

Starting x11vnc seems to have failed.
Rerun with a logfile (if needed) and examine the logfile
(Debugging -> show-logfile) for error messages.