SOLVED!
After searching on the Internet based on some knowledge of the system leading to issues related to the SD card and/or the OS I found this:
https://www.youtube.com/watch?time_continue=51&v=fJmMdIvb8zE
Just followed step-by-step and the I was able to upgrade to the latest April 2018 version 1.4r5. The Stratux now works!
Hope this helps someone out there.
Tex