Any help installing Auto Drive Hellas v1.7 into Mapsource would be appreciated.

I have used UniExtract to get the gmapprom.img file and renamed it to gmapsupp.img on my SD card. Using Mapsource 6.13.7 I can load the image file from the SD card but then an error saying some maps are not useable because AUTO MAP (HELLAS) is not installed is displayed.

Any clues?