Hi got these message when i use openjdk10 to create the map. openjdk 8 is patchlevel 161, which has errors in JavaFX, so i changed to openjdk 10 for tests Both files didn't exist, because they are complete in the north sea II: building basemap Time started: Sat May 12 09:14:02 CEST 2018 SCHWERWIEGEND (HGTReader): /home/bernd/map_build/tiles/65030345.o5m: failed to get size for file N52E003.hgt from /home/bernd/map_build/hgt/COPERNICUS/ N52E003.hgt.zip SCHWERWIEGEND (HGTReader): /home/bernd/map_build/tiles/65030345.o5m: failed to get size for file N52E003.hgt from /home/bernd/map_build/hgt/COPERNICUS/ N52E003.zip SCHWERWIEGEND (HGTReader): /home/bernd/map_build/tiles/65030345.o5m: failed to get size for file N52E003.hgt from /home/bernd/map_build/hgt/VIEW1/ N52E003.hgt.zip SCHWERWIEGEND (HGTReader): /home/bernd/map_build/tiles/65030345.o5m: failed to get size for file N52E003.hgt from /home/bernd/map_build/hgt/VIEW1/N52E003.zip SCHWERWIEGEND (HGTReader): /home/bernd/map_build/tiles/65030345.o5m: failed to get size for file N52E003.hgt from /home/bernd/map_build/hgt/VIEW3/ N52E003.hgt.zip SCHWERWIEGEND (HGTReader): /home/bernd/map_build/tiles/65030345.o5m: failed to get size for file N52E003.hgt from /home/bernd/map_build/hgt/VIEW3/N52E003.zip SCHWERWIEGEND (HGTReader): /home/bernd/map_build/tiles/65030398.o5m: failed to get size for file N55E007.hgt from /home/bernd/map_build/hgt/COPERNICUS/ N55E007.hgt.zip SCHWERWIEGEND (HGTReader): /home/bernd/map_build/tiles/65030398.o5m: failed to get size for file N55E007.hgt from /home/bernd/map_build/hgt/COPERNICUS/ N55E007.zip SCHWERWIEGEND (HGTReader): /home/bernd/map_build/tiles/65030398.o5m: failed to get size for file N55E007.hgt from /home/bernd/map_build/hgt/VIEW1/ N55E007.hgt.zip SCHWERWIEGEND (HGTReader): /home/bernd/map_build/tiles/65030398.o5m: failed to get size for file N55E007.hgt from /home/bernd/map_build/hgt/VIEW1/N55E007.zip SCHWERWIEGEND (HGTReader): /home/bernd/map_build/tiles/65030398.o5m: failed to get size for file N55E007.hgt from /home/bernd/map_build/hgt/VIEW3/ N55E007.hgt.zip SCHWERWIEGEND (HGTReader): /home/bernd/map_build/tiles/65030398.o5m: failed to get size for file N55E007.hgt from /home/bernd/map_build/hgt/VIEW3/N55E007.zip Number of MapFailedExceptions: 0 Number of ExitExceptions: 0 Time finished: Sat May 12 09:53:36 CEST 2018 Total time taken: 39 minutes 33 seconds This ist the output from openjdk8 with the same tiles from splitter, openjdk 8 is much faster and there are no messages II: building basemap Time started: Sat May 12 10:28:36 CEST 2018 Number of MapFailedExceptions: 0 Number of ExitExceptions: 0 Time finished: Sat May 12 10:56:13 CEST 2018 Total time taken: 27 minutes 36 seconds Bernd