I have used the tutorial with the latest Gmaptool; to install Garmin Thailand Street Map V.11.1 [TH/EN] in Mapsource 6.16.2, patched.
All worked as advertised, under utilities the map shows "unlocked" and it's listed in "Unlock Regions"
In the main window, the map is not listed , just blank windows.
I tried zooming/change detail ETC, no good.
Any ideas how to fix it .