I think I reported something similar a while back, and it was fixed by reverting some revision. This one is somewhat different, because the crash occurs with Geofabrik's finland.osm.bz2 from Jan 18 (today), but Jan 13 is fine. I am using mkgmap r1490 and splitter r103. Exception in thread "main" java.lang.NullPointerException at uk.me.parabola.tdbfmt.OverviewMapBlock.setArea(OverviewMapBlock.java:100) at uk.me.parabola.mkgmap.combiners.TdbBuilder.addToTdb(TdbBuilder.java:114) at uk.me.parabola.mkgmap.combiners.TdbBuilder.onMapEnd(TdbBuilder.java:103) at uk.me.parabola.mkgmap.main.Main.endOptions(Main.java:369) at uk.me.parabola.mkgmap.CommandArgsReader.readArgs(CommandArgsReader.java:124) at uk.me.parabola.mkgmap.main.Main.main(Main.java:122) Any ideas or anything that I should try? My scripts are available at http://www.polkupyoraily.net/osm/. Marko