Hi Gerd, the generation of the chinese overview map ends with: uk.me.parabola.imgfmt.MapFailedException: There is not enough room in a single garmin map for all the input data. The .osm file should be split into smaller pieces first. at uk.me.parabola.mkgmap.build.MapBuilder.makeMap(MapBuilder.java:308) at uk.me.parabola.mkgmap.combiners.OverviewBuilder.writeOverviewMap(OverviewBuilder.java:186) at uk.me.parabola.mkgmap.combiners.OverviewBuilder.onFinish(OverviewBuilder.java:98) at uk.me.parabola.mkgmap.main.Main.endOptions(Main.java:617) at uk.me.parabola.mkgmap.CommandArgsReader.readArgs(CommandArgsReader.java:128) at uk.me.parabola.mkgmap.main.Main.mainStart(Main.java:136) at uk.me.parabola.mkgmap.main.Main.main(Main.java:107) Henning