Hi All, I've been experimenting with Garmin BaseCamp opening gmapsupp.img files that I create. It works fine for some files (even getting the .TYP styling correct) but not for others. After a few hours of testing it seems that it'll open gmapsupp.img files created from 1-20 .osm files but not 30+ .osm files. I'm not certain yet if it's the exact number of files, or the combined size that triggers the failure. Does anyone have any experience with this? or know if there's a particular limit? Anyone been able to generate gmapsupp.img covering (say) the whole UK and get them to open with BaseCamp? I'm willing to do more troubleshooting if that'll help. Cheers, Andy Using mkgmap-r1867 Files split with splitter.jar --max-nodes=900000 java -Xmx3000M -jar ../../mkgmap-r1867/mkgmap.jar \ --family-name="OSM" \ --series-name="OSM" \ --family-id=88 \ --product-id=77 \ --gmapsupp \ --country-abbr="GBR" \ --route --net --remove-short-arcs \ --style-file=../../mkgmap-r1867/resources/styles/cyclemap \ /home/andy/uk/533300[123]*.osm.gz \ ../M0000058.TYP