I loaded 1.9.7 with no hitches, very smooth using the Maestro. Then I checked out PSK31 and voila, all of my previous problems disappeared. This all happened with no intervention on my part. Fine job FRS, many kudos.
Turns out the BIG Windows 10 update hit me today. All my CAT ports had errors (I was running version 1.8.3). So I uninstalled all versions of smartSDR, rebooted, deleted all ghost CAT serial ports, rebooted again just because, installed 1.9.7, rebooted again, updated the radio to 1.9.7 and everything seem to be work as it was. Have not look at the change log yet or used any new features yet. KUDOS to the Flex team!!