thanks for the reply. I had downloaded the mapsets several months ago, and the installer only wrote one registry entry. I downloaded from the Garmin link. I noticed since then that they have added links to download by state. Does the installer now write multiple registry entries?

Second queston?:
the installer writes a group of .img files (the tiles)

a 63240000.tbd What is that for?

a 63240000_mdr.img what is that for?

are those the correct files to hand to mkgmap? i’d reaally like to crack th code and compile maps myself, so long as I dont end up breaking my mapsource installation. What do I need to use as a settings file? the maps I get from OSM Download are fine for my purposes, I feel no prese nt need to modify them during the compile process. Any Idea where I could find the “default” settings file that OSM uses to create the maps they send me?