Mkgmap sometimes crashes with when trying to build a gmapsupp including index using an existing (prerenderd) image. Exception in thread "main" java.lang.IndexOutOfBoundsException: Index: 32803, Size: 488 at java.util.ArrayList.rangeCheck(ArrayList.java:571) at java.util.ArrayList.get(ArrayList.java:349) at uk.me.parabola.imgfmt.app.lbl.LBLFileReader.readPoiInfo(LBLFileReader.java:354) at uk.me.parabola.imgfmt.app.lbl.LBLFileReader.<init>(LBLFileReader.java:71) at uk.me.parabola.imgfmt.app.map.MapReader.<init>(MapReader.java:80) at uk.me.parabola.mkgmap.combiners.MdrBuilder.onMapEnd(MdrBuilder.java:108) 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) zip warning: name not matched: gmapsupp.img This happens when trying to make a gmapsupp with the following Garmin image: http://planetosm.oxilion.nl/~lambertus/garmin/routable/18-11-2009/63240210.i... It's reproducible with at least r1404 and r1387: java -Xmx2048M -jar mkgmap.jar --index --overview-mapname=63240000 --series-name='OSM World Routable' --latin1 --description='OSM World Routable' --product-id=3 --family-id=2000 --tdbfile --nsis --gmapsupp *324*.img If you remove the --index from the command then the IndexOutOfBoundsException exception does not occur. I don't know the Mkgmap verion used to render the source image, but it's pretty recent. If this version is needed then I'll look it up this evening. I hope someone can have a look at this. Thanks in advance.