There seems to be a but that appeared very recently (I assume about rev 714/715) in the .img generated by mkgmap. It's not possible to integrate them into Mapsource any more (Mapsource will crash on selecting). I will try to find out why and approx at what rev. this bug was introduced. Currently it's only possible to use --gmapsupp.img and then use gmaptool "Split files for Mapsource". to get the maps working in Mapsource. I haven't tested wheter .img generated by mkgmap without --gmapsupp.img work on Garmin Units themselve. It may also have to do something with the new --style-file Felix