Downloaded some GPX files from this website for trails but they don't want to open in Basecamp. http://midnr.maps.arcgis.com/apps/webappviewer/index.html?id=1710727ba3ec4c64928110fdb4f7799d Says unknown error opening import file. Is it because they're in the US or something? I don't have my GPS plugged in so don't have full maps in could that be it? I've attached a couple of the files. A