I don't understand, here is a snippet of my osm file <?xml version='1.0' encoding='UTF-8'?> <osm version='0.5' generator='GPSBabel-1.4.4'> <node id='-1' visible='true' lat='57.1482319' lon='-2.0966479'> <tag k='created_by' v='GPSBabel-1.4.4'/> <tag k='name' v='AB10 1AA'/> <tag k='place' v='AB10 1AA'/> </node> <node id='-2' visible='true' lat='57.1487071' lon='-2.0978060'> <tag k='created_by' v='GPSBabel-1.4.4'/> <tag k='name' v='AB10 1AF'/> <tag k='place' v='AB10 1AF'/> </node> could the node id also be a problem, if it is do you know of an automatic my to change them. Barry -- View this message in context: http://gis.19327.n5.nabble.com/converting-post-codes-to-cities-tp5776958p577... Sent from the Mkgmap Development mailing list archive at Nabble.com.