Gents, I've just noticed that the quite new option --gmapi does not work properly regarding overview maps: - I first build the img files where all is correct, overview maps are properly built and set at the different needed locations (*.tdb file, elsewhere ?) - running mkgmap with the option --gmapi (complete output shown below) causes that the overview maps are not anymore shown in BaseCamp I've tried different versions of options but I do not get the overview maps working with --gmapi. BTW: Something similar happens probably with --gmapsupp: there are now overview maps visible on the GPS itself. Here the call of mkgmap and its output: java -Xmx1536M -Dfile.encoding=UTF-8 -jar D:/fzk/develop/fzk-mde-garmin/Freizeitkarte-Entwicklung/tools/mkgmap/mkgmap.jar --max-jobs=2 --index --code-page=1252 --gmapi --license-file=Freizeitkarte_LUX.license --product-id=1 --family-id=6442 --family-name="Freizeitkarte_LUX" --series-name="Freizeitkarte_LUX" --description="Freizeitkarte_LUX (Release 17.02)" --product-version="6442" 6442*.img 6442.TYP --tdbfile --show-profiles=1 Time started: Sun Feb 05 16:10:10 CET 2017 Number of MapFailedExceptions: 0 Number of ExitExceptions: 0 Time finished: Sun Feb 05 16:10:12 CET 2017 Total time taken: 1858ms Am I doing something wrong or is this a 'defect' in the newly implemented gmapi option ? Thanks for helping Patrik