Hi Arndt, I was not able to reproduce this problem. Please tell us your dem options. Gerd ________________________________________ Von: mkgmap-dev <mkgmap-dev-bounces@lists.mkgmap.org.uk> im Auftrag von Arndt Röhrig <arndt@speichenkarte.de> Gesendet: Montag, 25. Dezember 2017 03:17:14 An: Development list for mkgmap Betreff: [mkgmap-dev] Error BeNeLul Happy Christmas :) i have a problem to build a NRWplus map or a BeNeLux map. (NRW plus all countrys around) The OSM-Data is reduced to "Bremen". SRTM is NRW & all countrys around. mkgmap 4000 build a correctly map. mkgmap 4019 crashes with this message: SCHWERWIEGEND (MapBuilder): ..\Splitter\88039020.osm.pbf: exception while creating DEM file SCHWERWIEGEND (MapFailedException): ..\Splitter\88039020.osm.pbf: (thrown in MapBuilder.makeMap()) 23 SCHWERWIEGEND (MapBuilder): ..\Splitter\88039021.osm.pbf: exception while creating DEM file SCHWERWIEGEND (MapFailedException): ..\Splitter\88039021.osm.pbf: (thrown in MapBuilder.makeMap()) 23 gmapsupp will not build with this. http://www.speichenkarte.de/beta/88039020.osm.pbf Greets Arndt