Hi Frank, I get an error message "unbekanntes Argument: 10010000.tdb" with gmtool -i "g:\mkgmap\Openfietsmap\versions\test\Openfietsmap (BNL).gmap\Product1\10010000.tdb" -i . --withsubdirs --mapsource=new.tdb;noov;notyp;nomdx;nomdr;noinst --hasdem=1 -o g:\mkgmap\Openfietsmap\versions\test\ What must be filled in after the second -i argument, you put a dot "." there, what does it mean? And what is the purpose of parameter -o? Is that the folder where you want to write the output to? I'm sorry if my questions sound stupid but I don't get it. ________________________________ Van: mkgmap-dev <mkgmap-dev-bounces@lists.mkgmap.org.uk> namens Frank Stinner <frank.stinner@leipzig.de> Verzonden: dinsdag 28 november 2017 07:07:35 Aan: mkgmap-dev@lists.mkgmap.org.uk Onderwerp: [mkgmap-dev] gmtool and TDB Hi all, i have gmtool a little bit extended in the hope of simpler creation of TDB's. The main point is, that we have to register a old TDB as input file BEFORE all other files. Then take gmtool all possible properties from the old file and remove or complete the old subfilelist. If we only have additional DEM's can we do: gmtool -i old.tdb -i . --mapsource=new.tdb;noov;notyp;nomdx;nomdr;noinst --hasdem=1 -o . This should be enough for a map with IMG's. If we have a gmap-style map, we need the subfiles in the subdirectorys and we can do: gmtool -i old.tdb -i . --withsubdirs --mapsource=new.tdb;noov;notyp;nomdx;nomdr;noinst --hasdem=1 -o . Hope it worked. Frank