Hi WanMil, all, Someone has apparently started to import landuse multipolygons in Russia. I keep getting errors for them. Some multipolygons only have "outer" lines. Here are a few examples: http://www.openstreetmap.org/browse/relation/594151 http://www.openstreetmap.org/browse/relation/594273 http://www.openstreetmap.org/browse/relation/595581 http://www.openstreetmap.org/browse/relation/595858 http://www.openstreetmap.org/browse/relation/597112 http://www.openstreetmap.org/browse/relation/597218 http://www.openstreetmap.org/browse/relation/598234 http://www.openstreetmap.org/browse/relation/598527 These are fully within the Geofabrik extract that I have been using. I recently edited the Geofabrik polygon so that no lake multipolygons or natural=coastline islands are severed. Here is one example that is drawn over an existing island multipolygon: http://www.openstreetmap.org/browse/relation/598998 If you download this multipolygon and some surroundings, you should soon get the idea what is wrong with these imports. If the multipolygon handler cannot be made any more robust, then I would appreciate some option that would ignore certain types of multipolygons. Best regards, Marko