Martin, there seems to be a bug in the download code.... I had it set to download an area where I would not have internet access, and it completed the download OK. However, upon arrival, the area size I asked was only OK when zoomed out, the zoomed in levels were way too small. It looks like the number of tiles was the same between zoomlevels, can that be? I had asked 20km range (yeah, a bit too much), and at the lowest level that I asked (current -2) I got less than 1km