Hello, Compiling a map of Italy, I got these warning messages : GRAVE (RoadNetwork): Road null (OSM id 36913306) contains zero length arc GRAVE (RoadNetwork): http://www.openstreetmap.org/?lat=44.33355&lon=9.34585&zoom=17 The parameters I use are : -ea \ -Xmx896M \ -jar $FILEDIR/mkgmap.jar \ --country-name=$COUNTRY_NAME \ --country-abbr=$COUNTRY_ABBR \ --family-id=148 \ --gmapsupp \ --ignore-maxspeeds \ --ignore-turn-restrictions \ --latin1 \ --location-autofill=1 \ --lower-case \ --overview-mapnumber=$PREFIX_CARTE$INDEX_CARTE"00" \ --preserve-element-order \ --product-id=$INDEX_CARTE \ --remove-short-arcs \ --road-name-pois \ --route \ --style-file=$FILEDIR/styles/arvernes \ --tdbfile \ --transparent \ -c $CARTESDIR/template.args \ The "remove-short-arcs" parameter is used. Is it just a message to tell me that mkgmap has removed the zero length arc or a problem ? Thanks. Francois --