SUCCESS!!!
I Have a fully functional scope booting from USB stick. I get no error messages during the boot, I just have to wait for the looping to start, and after approximately 6 or 7 loops, I get a message saying "booting from USB stick" on the second splash screen. This message is displayed in small red letters on the top left of the screen. Once the boot completes, I get an additional message in the center of the display. this one says "All options enabled" on the first line and "Press any key to continue" on the second line. The message goes away when I press a key.
The next thing I checked was the "About Oscilloscope" screen. Here I found a surprise. I have been populating the USB stick with the software I got from TopUser a few comments back. I had assumed the stuff to be derived from FW version 2.35. But Here I see the system version being 2.37. That's way cool. I may try to build a stick based on 2.39 later...
I went through some changes to my command line specification in infiniivision.lnk file. I ended up with the following command which enables the largest number of licenses:
86#\usb\infiniiVision\infiniivisionLauncher.exe -l All -l SCPIPS -l CABLE -l TOM -l SGMCMost of the enabled licenses have a '*' displayed next to them, but there is no expiration date indicated.
So here's what made the stuff work for me: I reformatted one of my USB sticks (on my Apple MacBook Pro) so the single partition present on the stick was modified from "MS-DOS (FAT)" which is FAT32 to "exFAT" which I believe is FAT16. I then loaded the files onto this stick in the order which I described in one of my earlier posts. That did the job. The USB stick I'm using is a very small one made by SanDisk, and it's a 8GB size.
That's way cool!
Thanks to all for the invaluable help.