Hello, Not sure if this is directly related to mkgmap but I thought I would seek advice here. I have a strange behavior with mkgmap. When I generate my maps one by one, everything works fine. When I try to generate all at once, java segfaults. When I say one by one, I mean: for FILE in `ls 11*.osm.gz` do java -ea -Dlog.config=./logging.properties -Xmx3000M -jar ./mkgmap-r1580/mkgmap.jar \ --net --route \ --drive-on-right --check-roundabouts --check-roundabout-flares \ --add-pois-to-areas --adjust-turn-headings \ --link-pois-to-ways \ --description="OSM North America map" \ --style-file=$OSM_BASE/styles --style=nakor \ $FILE done When I say all at one, I mean java -ea -Dlog.config=./logging.properties -Xmx3000M -jar ./mkgmap-r1580/mkgmap.jar \ --net --route \ --drive-on-right --check-roundabouts --check-roundabout-flares \ --add-pois-to-areas --adjust-turn-headings \ --link-pois-to-ways \ --description="OSM North America map" \ --style-file=$OSM_BASE/styles --style=nakor \ 11*.osm.gz The error I get in the latest case is: # # A fatal error has been detected by the Java Runtime Environment: # # SIGSEGV (0xb) at pc=0x00007f8f2500e902, pid=2331, tid=140252930266896 # # JRE version: 6.0_17-b17 # Java VM: OpenJDK 64-Bit Server VM (14.0-b16 mixed mode linux-amd64 ) # Derivative: IcedTea6 1.7 # Distribution: Custom build (Wed Feb 3 14:25:54 UTC 2010) # Problematic frame: # j uk.me.parabola.mkgmap.main.Main.endOptions(Luk/me/parabola/mkgmap/CommandArgs;)V+428 # # An error report file with more information is saved as: # .../hs_err_pid2331.log # # If you would like to submit a bug report, please include # instructions how to reproduce the bug and visit: # http://icedtea.classpath.org/bugzilla # Thanks, N.