Now I'm getting audio but a solid gray frame where the video should be. Both SD and HD. Downgraded to 5708, which worked before -- and it too now displays a gray screen (after 1-2 seconds of flashing black screen). No error msgs. I don't get it: what's going on with this flaky app? I wanna go back to 4526, which simply worked! Anybody still have it? I erased mine when I started out on this miserable "upgrade" trajectory, a rocky road indeed.