Hi Nop, a missing resource file is caused by a wrong build. I don't know how to fix that in IntelliJ. In Eclipse I just have to rebuild. Maybe try to build with ant on the command line first. Gerd ________________________________________ Von: mkgmap-dev <mkgmap-dev-bounces@lists.mkgmap.org.uk> im Auftrag von Nop <nop@wanderreitkarte.de> Gesendet: Samstag, 9. Oktober 2021 18:38 An: mkgmap-dev@lists.mkgmap.org.uk Betreff: Re: [mkgmap-dev] Contributing to mkgmap Hi Peter, thinking about what you wrote, is it possible that this is a bug in mkgmap? If Main.getValidOptions() would return null if unable to read, it would work. But as it returns an empty Set, all normal options are rejected. And of course those are required to control mkgmap. bye, Nop _______________________________________________ mkgmap-dev mailing list mkgmap-dev@lists.mkgmap.org.uk https://www.mkgmap.org.uk/mailman/listinfo/mkgmap-dev