Following a successful upgrade from 6.4.010 on my Uno4kSE to 6.4.011, I thought I'd do the same on my Duo4K, however, after booting up all seemed fine until I tried to play a previously recorded programes but all I get is a blank screen. Fortunately, I did a full image backup prior to the update and since going back to 6.4.010 everything is fine and the recordings I couldn't watch on 6.4.011 play perfectly. As I have multiboot enabled I still have the 6.4.011 image available to fix if possible. Anyone have thoughts............?