Nevada map not working in Garmin

Hi, Just added Utah, Arizona and Nevada, Utah and Arizona work OK but Nevada says ‘‘map data not available’’ tried downloading the new and old style but with the same result. reformatted the SD card but still not able to read Nevada. It shows up in the map list on my Garmin GPS. The map is actually there as I can go to it via favourites but if I try to open it directly or search for an address I get the not available message.

Using Windows 10

Thanks for any assistance.