I want to install another map on my garmin edge 540. I needed the maps for Spain, and installed them last week ...had to de-install the maps for middle Europe though because there's not enough space on the 540. So I'm back home and want to install middle Europe again. But the newly updated Garmin Express 7.25 won't show me any maps! First I had it and clicked on the appropriate map, but couldn't confirm its installation (greyed out button). After that a new synchronization, and the maps icon doesn't even appear any more. In the meantime the check for updates runs wild and won't stop. Why is there no possibility to install custom maps via the app or directly on the device with WiFi? This is really bogus. Especially if you want to travel with your device.