Hi Minko, can't reproduce the problem with your 10010001.o5m. Maybe you use a poly file with --dem-poly ? Please try to reproduce the problem with 10010001.o5m and a directory containing only N50E002.hgt (as this is the only file needed) and a small set of options (default style) If you can reproduce the problem please post the options and N50E002.hgt . Gerd ________________________________________ Von: mkgmap-dev <mkgmap-dev-bounces@lists.mkgmap.org.uk> im Auftrag von lig fietser <ligfietser@hotmail.com> Gesendet: Samstag, 6. Januar 2018 16:05:49 An: Development list for mkgmap Betreff: Re: [mkgmap-dev] r4033: new dem options are now documented I dont use logging Gerd. And I saw this behaviour in 4028 and 4033. Here are some of those o5m tiles, maybe they are too big too handle? http://mijndev.openstreetmap.nl/~ligfietser/mkgmap/ ________________________________ Van: mkgmap-dev <mkgmap-dev-bounces@lists.mkgmap.org.uk> namens Gerd Petermann <gpetermann_muenchen@hotmail.com> Verzonden: zaterdag 6 januari 2018 06:59 Aan: Development list for mkgmap Onderwerp: Re: [mkgmap-dev] r4033: new dem options are now documented Are you sure that r4026 was the first version that did not work for you? Do you use logging with -Dlog.config=... ? If yes, please try without. Gerd <http://www.mkgmap.org.uk/mailman/listinfo/mkgmap-dev>