can't install TOPO U.S. 24K Southwest v2 to etrex 30

Windows 11

Basecamp 4.7.5

Etrex 30x

TOPO U.S. 24K Southwest v2

DVD maps installed and functioning in Basecamp.  I uninstalled maps from the unit to install on an SD card.  I am unable to re-install to the unit, to the unit with SC card installed or to the SD card using a reader.  All attempts give the following dialog:

Tried re-installing and remove/reinstall, no joy. 

My 3.0 North Central 24K v3 topos install through the download process without issue.

I've run chkdsk on both the unit and the card.

I've reformatted the card and tried installing with and without the v3 maps installed.

I've used 3 different bi-directional Mini USB cables, including the garmin supplied cable.