Got a subscription with Seattle Avionics for the SEC chart and airport diagram data. Using their Chartmanager app, formatted two new Sandisk usb 32GB drives and downloaded the data. Plugged them into my SkyView in the aircraft. . Go to map page on Skyview, hit the layers button ,then hit the button at the bottom under "SEC", and the Sectional chart image appears on the map.....great!....... BUT, after about 5 seconds, it goes away! Then when I go back to Layers to try again, the "SEC" does noteven appear at the bottom. If I shut it down and try again...same thing happens. Tried it on 4 brand new Sandisk 32GB USB drives...no luck.