Updated just now to 1.8.4. All OK on computer and 6500. Then fired up the Maestro and it downloaded the software and completed steps 1, 2 and 3 of 4. Now I get "Waiting on Hardware Initialization (W). Guess a call to FRS and return shipping of my Maestro is in the cards for tomorrow.
I have converted this topic to a support HelpDesk ticket (http://helpdesk.flexradio.com) for expedited issue resolution. If anyone else is experiencing an issue similar to this one, please submit a HelpDesk support ticket for issue resolution.