[mkgmap-dev] Strange error in mkgmap

Tue Feb 13 11:37:30 GMT 2018

Hi Franco,

there are 2 weird things in your maps. First is a subfile SRT, which 
doesn't belong to any tile or index. It is present in both files, bad 
and good img. It is probably ignored by GPS.

Maybe mkgmap writes SRT even if MDR is not present?

Second distinction is that bad img is missing MPS subfile, which is kind 
of directory with names of combined img. This could be the reason for 
different name in GPS, but I think the map should still work correctly.

Again, maybe there is some kind of limit of tiles, that mkgmap 
remembers, when creating MPS subfile?

So IMHO the problem is with combining your map into single gmapsupp.img. 
You could install map for BaseCamp and then use MapInstall for creating 
combined map.

-- 
Best regards,
Andrzej