Hi, i have experienced( and also red that otherones maked the same experience) sometimes, that mkgmap created maps/overlays couldn't be displayed with TTQV althought the same map could be used with Mapsource perfectly. Meanwhile accidently i created this possible erroneous map with a style from another of my maps and amazingly then i could use it in TTQV. I'm shamed to say that i unfortunately forgot making a backup of the lines-file which seems to cause these kind of problem, so it's difficult for me going on investigating it. May be some of you have an idea if there is compability issue by using style file entries with different mkgmaps versions which should be keep in mind by map builders. Example which could not be displayed with TTQV OSM Reit Wanderkarte http://topo.geofabrik.de/OSM_Wanderkarte_mapsource.zip cheers Gert