When I try to compile Finland (I think this has been already happening since around rev 1835) I get the following error - If I noticed right this happens on the mdr creation - maps compile fine beforehand: I don't think it was reported yet - that's why I send it out here. (similar error happens on some German Bundeslaender - however Germany as a whole compiles fine). This is compiling the Finland osm.pbf extract from Geofabrik. Can you get the same error or do I need to provide some more info? Exception in thread "main" java.lang.AssertionError at uk.me.parabola.mkgmap.combiners.MdrBuilder.addStreets(MdrBuilder.java:310) at uk.me.parabola.mkgmap.combiners.MdrBuilder.onMapEnd(MdrBuilder.java:171) at uk.me.parabola.mkgmap.main.Main.endOptions(Main.java:411) at uk.me.parabola.mkgmap.CommandArgsReader.readArgs(CommandArgsReader.java:126) at uk.me.parabola.mkgmap.main.Main.main(Main.java:129)