Hi, I think the below error message is for writing the overview map. Of which I would not be surprised, it was a test on splitting and building a full-planet.osm map. So... no worries. But now I'm wondering if there is a way in which I could continue testing with the already generated 4.426 img-files and 4.426 ovm_work files to obtain a .tdb file, mdx files, nsis installer etc. It took 21 hours for mkgmap sofar, so it would be nice if that time spent was not useless. I used splitter with maxnodes 1.700.000 which took another 9 hours and did not give errors when building a single .img file I would like to simplify the style-file run mkgmap again on the previous output and try the create an overview map only (So without building all the img files again) and this way iterate until I found the breakpoint. 1. Would that make sense? 2. Could I enable some more error/verbose logging to obtain info about sizes/counts or whatever indicators that would help to see if my changes help in my search to a smaller overviewmap. 3. Would It make sense to not generate a MapFailedException but a warning only? So mkgmap would continue finishing the last millimeters to the finish (off course without a working overviewmap) Kind regards Joris SEVERE (MapFailedException): (thrown in BufferedImgFileWriter.ensureSize()) 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. 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.imgfmt.app.BufferedImgFileWriter.ensureSize(BufferedImgFileWriter.java:275) at uk.me.parabola.imgfmt.app.BufferedImgFileWriter.put(BufferedImgFileWriter.java:238) at uk.me.parabola.imgfmt.app.trergn.Polyline.write(Polyline.java:142) at uk.me.parabola.imgfmt.app.trergn.RGNFile.addMapObject(RGNFile.java:140) at uk.me.parabola.imgfmt.app.map.Map.addMapObject(Map.java:273) at uk.me.parabola.mkgmap.build.MapBuilder$ShapeAddFilter.doFilter(MapBuilder.java:1459) at uk.me.parabola.mkgmap.build.LayerFilterChain.doFilter(LayerFilterChain.java:58) at uk.me.parabola.mkgmap.filters.LinePreparerFilter.doFilter(LinePreparerFilter.java:143) at uk.me.parabola.mkgmap.build.LayerFilterChain.doFilter(LayerFilterChain.java:58) at uk.me.parabola.mkgmap.filters.RemoveEmpty.doFilter(RemoveEmpty.java:59) at uk.me.parabola.mkgmap.build.LayerFilterChain.doFilter(LayerFilterChain.java:58) at uk.me.parabola.mkgmap.filters.RemoveObsoletePointsFilter.doFilter(RemoveObsoletePointsFilter.java:142) at uk.me.parabola.mkgmap.build.LayerFilterChain.doFilter(LayerFilterChain.java:58) at uk.me.parabola.mkgmap.filters.PolygonSplitterFilter.doFilter(PolygonSplitterFilter.java:81) at uk.me.parabola.mkgmap.build.LayerFilterChain.doFilter(LayerFilterChain.java:58) at uk.me.parabola.mkgmap.build.LayerFilterChain.startFilter(LayerFilterChain.java:73) at uk.me.parabola.mkgmap.build.MapBuilder.processShapes(MapBuilder.java:1260) at uk.me.parabola.mkgmap.build.MapBuilder.makeSubdivision(MapBuilder.java:901) at uk.me.parabola.mkgmap.build.MapBuilder.makeMapAreas(MapBuilder.java:813) at uk.me.parabola.mkgmap.build.MapBuilder.makeMap(MapBuilder.java:312) at uk.me.parabola.mkgmap.combiners.OverviewBuilder.writeOverviewMap(OverviewBuilder.java:192) at uk.me.parabola.mkgmap.combiners.OverviewBuilder.onFinish(OverviewBuilder.java:105) at uk.me.parabola.mkgmap.main.Main.endOptions(Main.java:675) at uk.me.parabola.mkgmap.CommandArgsReader.readArgs(CommandArgsReader.java:125) at uk.me.parabola.mkgmap.main.Main.mainStart(Main.java:144) at uk.me.parabola.mkgmap.main.Main.main(Main.java:115) Met vriendelijke groeten, Joris Bo jorisbo@hotmail.com<mailto:jorisbo@hotmail.com>