Hello!
I generate every week map from osm data in single file and elevation contour from 133 .osm files. Osm data increase in each time, elevation data in osm files is permanent. Yesterday i have error in generation gmapsupp map:
--cut-- Exception in thread "main" java.lang.IllegalArgumentException at java.nio.ByteBuffer.allocate(Unknown Source) at uk.me.parabola.imgfmt.sys.Directory.sync(Directory.java:176)
Thanks for the report, it is a problem I've never seen before. The failure is happening while creating a gmapsupp file. Could you tell me the size of the gmapsupp.img the last time it worked? Is it anywhere near 2G in size? The mkgmap code will not, I think, produce a gmapsupp larger than 2G, and, although this could be fixed I'm not sure that GPS devices would be able to deal with it anyway - or not all of them, I don't believe mine can even take an SD card larger than 2G. If you are not actually using the gmapsupp.img then removing the option will fix the crash. ..Steve