On my new PC, I have Windows 10. BaseCamp is simple to install; the global map is functioning. Download of 'OpenStreetMap' and 'OpenFietsMap' did run without any error. However, BaseCamp only finds the global map and not any of the downloaded maps. How can I resolve this problem?
You need to install the Garmin versions of the OpenStreepMap. Luckily, there is already a website that allows you to do so. Visit the website, select the desired map and download the Lite version. If BaseCamp is running, close it and launch the EXE file. Once the installation is finished, start BaseCamp and use the drop down menu to select the maps source files and it should be displayed.