Hi, I've run into a strange problem with --generate-sea while generating a map of Canada. Here's a screenshot of the problem I'm seeing: http://bagu.org/scratch/generate-sea-problem-lake-ontario.bmp I'm using mkgmap version r1783 with these options: java -Xmx400M -Dlog.config=/home/ben/osm/mkgmap/resources/logging.properties -jar \ /home/ben/osm/mkgmap/dist/mkgmap.jar --tdbfile --latin1 --gmapsupp \ --country-name=Canada --country-abbr=CAN '--series-name=OSM Canada' \ '--family-name=Open Street Map Canada 12 Jan 2011' --location-autofill=1 \ --add-pois-to-areas --ignore-unnamed-areas --road-name-pois --check-roundabout-flares \ --route --remove-short-arcs --drive-on-right --check-roundabouts --family-id=34244 \ --product-id=1 --generate-sea=extend-sea-sectors,multipolygon --make-all-cycleways -c template.args --description=ALL Does anybody know what's going on? What's the best way to debug a problem like this? Thanks, Ben