I've downloaded Garmin Express to my Mac desktop and it recognizes my Streetpilot 2720 for which I have the lifetime updates. When it begins to install, its says "Oops! There's Not enough Space" and advises me to select a subset of the maps to download by selecting a region from the list. However, the list is never populated, I just get a small spinning wheel icon.
How do I update the maps on my SP2720?