I borrowed a dual layer dvd from my friend and wanted to watch it but when I put the dvd in my zenith dvb318, it just gave me a blank screen and didn't do anything else. I couldn't press menu or anything and when i pressed the eject button, that didn't work either. All other buttons on the player didn't work either (dvd player seemed to freeze), I had to disconnect the power and reconnect it just to get the dvd out. I tried playing other dvds and dvdrs and they worked fine but the dual layer dvd+r didn't work and had the same problems. The DVD is a verbatim dvd+r DL. I played the same dvd on another dvd player in my house and it worked fine. Any solutions? Thanks in advance.