I build maps daily for some 60 countries for my web. Since a couple of months or so, almost every day there are some maps that fail to build with an ArrayIndexOutOfBoundsException. Maps that fail change from one day to the next. I have not been able to reproduce the problem, as failure seems to be random. If I later build any of the maps that failed, even using the same input file, it usually builds fine. Problem doesn't seem to be style related, as it happens (also randomly) with any of the two styles I use for my maps. Error message is as follows: Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 265 at java.lang.Integer.valueOf(Integer.java:831) at uk.me.parabola.imgfmt.app.lbl.LBLFileReader.readPoiInfo(LBLFileReader.java:422) at uk.me.parabola.imgfmt.app.lbl.LBLFileReader.<init>(LBLFileReader.java:75) at uk.me.parabola.mkgmap.combiners.FileInfo.lblInfo(FileInfo.java:326) at uk.me.parabola.mkgmap.combiners.FileInfo.lblInfo(FileInfo.java:313) at uk.me.parabola.mkgmap.combiners.FileInfo.imgInfo(FileInfo.java:259) at uk.me.parabola.mkgmap.combiners.FileInfo.getFileInfo(FileInfo.java:152) at uk.me.parabola.mkgmap.main.Main.endOptions(Main.java:575) at uk.me.parabola.mkgmap.CommandArgsReader.readArgs(CommandArgsReader.java:128) at uk.me.parabola.mkgmap.main.Main.mainStart(Main.java:135) at uk.me.parabola.mkgmap.main.Main.main(Main.java:106) I would need any hint that helps me to reproduce the problem, so that we can debug it.