I’ve been unsuccessful in getting a properly working system today, installing from a freshly downloaded LiveGnome.iso from the Debian page.
The first install actually crashed, because the USB drive was jostled.
The second install went fine, but had no USB support (hub devices seen, but no attached devices seen)
Now I’m doing a third install.
In my experience with Debian, using the netinst ISO is the most reliable option. That being said, install from live USB should be fine.
At this point, I would probably re-flash the image on the drive.