Hopefully someone can shed some light on what I'm doing wrong? java -Xmx1000M -ea -jar ~/garmin/utils/mkgmap/mkgmap.jar --style-file=/home/lambertus/garmin/world/styles/default/ --input-file=63240001.osm.gz java.lang.StackOverflowError at sun.nio.cs.UTF_8.updatePositions(UTF_8.java:58) at sun.nio.cs.UTF_8$Encoder.encodeArrayLoop(UTF_8.java:392) at sun.nio.cs.UTF_8$Encoder.encodeLoop(UTF_8.java:447) at java.nio.charset.CharsetEncoder.encode(CharsetEncoder.java:544) at java.lang.StringCoding$StringEncoder.encode(StringCoding.java:240) at java.lang.StringCoding.encode(StringCoding.java:272) at java.lang.String.getBytes(String.java:946) at java.io.UnixFileSystem.getBooleanAttributes0(Native Method) at java.io.UnixFileSystem.getBooleanAttributes(UnixFileSystem.java:228) at java.io.File.isDirectory(File.java:754) at uk.me.parabola.mkgmap.osmstyle.DirectoryFileLoader.<init>(DirectoryFileLoader.java:47) at uk.me.parabola.mkgmap.osmstyle.StyleFileLoader.createStyleLoader(StyleFileLoader.java:64) at uk.me.parabola.mkgmap.osmstyle.StyleImpl.<init>(StyleImpl.java:132) at uk.me.parabola.mkgmap.osmstyle.StyleImpl.readBaseStyle(StyleImpl.java:518) at uk.me.parabola.mkgmap.osmstyle.StyleImpl.<init>(StyleImpl.java:140) at uk.me.parabola.mkgmap.osmstyle.StyleImpl.readBaseStyle(StyleImpl.java:518) at uk.me.parabola.mkgmap.osmstyle.StyleImpl.<init>(StyleImpl.java:140) at uk.me.parabola.mkgmap.osmstyle.StyleImpl.readBaseStyle(StyleImpl.java:518) (Lot's of the same errors like the last 6 lines snipped) The styles directory is an svn export of the styles section in the Mkgmap SVN repository, svn info reports version 2160. Mkgmap version is r2162.