Windows 10, Basecamp 4.6.2, GPSMap 64s. When the device with a memory card installed is displayed in Basecamp, and I click on the folder icon that represents the device's internal storage, I see the installed files displayed in the lower left pane. However, when I click on the folder icon that represents the memory card's user data, the installed files are not listed. Is this the expected behavior?
I'm using Win7, but the same GPS. I see all the data on the SD card when I click the icon for it. Have you looked at it using the Windows File Explorer to verify there are actually files on the SD card?