Version mkgmap-r4448 was committed by gerd on Thu, 13 Feb 2020 fix possible NPE introduced with r4432 FileNotFoundException was ignored. May result in a NullPointerException when input file is not in the expected format. e.g. with java -jar mkgmap.jar . http://www.mkgmap.org.uk/websvn/revision.php?repname=mkgmap&rev=4448