Hi Steve, I can reproduce the problem when I use the option --description without an argument. I suggest to remove the option or to use a reasonable value like --description="OSM map" Gerd ________________________________ Von: mkgmap-dev <mkgmap-dev-bounces@lists.mkgmap.org.uk> im Auftrag von Steve Sgalowski <steve.sgalowski@gmail.com> Gesendet: Mittwoch, 21. Dezember 2016 01:17:58 An: Development list for mkgmap Betreff: [mkgmap-dev] errors with 3734 i use mkgmap and spliier in a 3rd party program to make map files now i still get these results with 3734 but not with 3726 here is a image of the errors i get Stephen