i'm shifting from a consumer of Dave Hansen's roll ups of the Lambertus maps to generating specific maps on my own with mkgmap. the first one i generated looks good, but i'm trying to sort out correct population of the address index. i downloaded an extract from osm via xapi, and ran mkgmap with these parameters: $ java -jar ../mkgmap/mkgmap-r2379/mkgmap.jar capitaldistrict-2012-11-23.osm --index --gmapsupp i got a bunch of errors which look like complaints about malformed data in osm, which i'll go look at and clean up later (an example: SEVERE (RoadNetwork): capitaldistrict-2012-11-23.osm: Road (South Lake Avenue, http://www.openstreetmap.org/browse/way/5579946) contains zero length arc at http://www.openstreetmap.org/?mlat=42.65485&mlon=-73.78075&zoom=17) i installed the map on my nuvi 255w. the map looks good, although i haven't gone out and tried to route with it yet. my main interest right now is getting a properly populated address index, and it doesn't seem to have one. i went back and reviewed the .osm file and verified that there are POIs in it with what appear to be properly populated addr: fields. are there any specific requirements for OSM data to get the address index populated properly? admin_boundary data perhaps? (this would be an issue in the US where address data doesn't usually match up well with admin_boundaries.) thanks, richard