cutting master 4

I have been using CorelDraw 2017 version with my Graphtec CE-Lite 50 with no issues for over a year.  Suddenly, one day when trying to send a job to plotter, I get the following prompt:

Connection to cutting master 4 timeout

I have tried uninstalling and re-installing cutting master 4 several times, restarted computer, re-booting CorelDraw , nothing is working.

Any help would be greatly appreciated.  I have called and emailed Graphtec Support and I can't get anyone to call or email back.