After sending my first post, I decided to manually uninstall 1.6.1, but I kept receiving error messages on a number of files within the Registry Backup folders.  They were supposed to be removed on next boot, but that didn't occur.  I was however able to manually remove the files via File Explorer.  I installed 1.6.7 and it appears to be OK so far.  I deleted my original scheduled task for Reg Backup that a created way back when the program first came out, hoping that a fresh task may contribute to a successful operation.  I did a manual run from within Task Scheduler and the program ran fine.  The test will be if the scheduled task runs tomorrow morning, and of course I want to check the Reliability Monitor to see if any problems are detected.
Thanks for the prompt response Shane.   -SA Jack