Group: Awaiting Activation
Just to sign off on this subject, the problem is solved. The last failed attempt gave me a totally different error message stating that the destination drive did not exist. This was clearly wrong as it was showing up, and behaving normally in Windows Explorer, but it gave me a starting point for troubleshooting. To cut a long story short, I traced the problem to the USB socket I was using. Why Macrium reported this drive as non existing I have no idea, but changing to a different USB socket fixed my problem.
Thanks for your input