I have been given a map which loads and views correctly into Locus Maps, 'Natmap_250K.sqlite'. It is a large map ~ 2.5g
I have placed the map in a subdirectory of the OruxMap's 'Mapfiles' directory but when I try to switch to this map, OruxMaps shows me the directory it is in but the map does not appear in the list of maps which can be loaded. No errors are produced.
What am I doing wrong? Are sqlite maps used by LocusMaps different to sqlite maps used by OruxMaps? Is there a way of using this map in OruxMaps?