Bruce,
If you have not rebooted your computer since installing the driver, try that first. If you have, we can try the CDM uninstaller, to remove any history of the SA44B and get a fresh start.
http://www.ftdichip.com/Support/Utilities/CDMUninstaller_v1.4.zip
Unplug the SA44B, and then run the CDMUninstallerGUI
Use VID = 0403, PID = 6010, then click “Add” then “Remove Devices”
Plug in your SA44B and wait 3 minutes. Watch the LED. It should turn green once the driver finishes installing.
Let me know if this helps.