I have quite a collection of dpg files, and on my wifes R4, with latest Moonshell, they play absolutely fine. I have the most recent Sakura, but just get a black screen, no audio or video. I tried installing Moonshell, but this doesn't even load. I have reformatted my memory card and reinstalled everything, but still nothing. Any ideas? Should I try the 3 in 1 firmware?