Well, I installed google maps on the ipad and cached a very large area here in the valley. All seemed to go ok. I took some time to cache the file. I just went back and started up the outfit. Pulled up the standard map view around my home point, then tapped hybrid and there it was. However the area is kind of small, maybe 50 acres at 200 scale, And if you scroll the map around, the areas off the edges of the map are the dark grey I was seeing. Perhaps I had moved off the detailed area before. I am surprised it doesn't fill in the detail as it scrolls. Is this making any sense? I will go back and play with it some more