Sanyo Z2 Hdmi-dvi Problems

Hi, I,ve Recently Added A Denon 1930 Dvd Player To My Sanyo Z2 And Tried Feeding With A 10m Hdmi Cable With A Dvi Adaptor At The Projector End.
I Am Getting A Digital Signal At The Projector End(menu Confirms This) But The Picture Is Stable For 2 Seconds Or So ,then Goes Black Then Comes Back Again And So On.
I,ve Tried The Same Cable Feeding Our Flat Panel Tv Using Same Hdmi Output On Player And All Is Well,so I,m Assuming The Cable Is Ok.
Is This A Problem With Hdcp Compatability And Can It Be Sorted.
Any Response Much Appreciated.
Mike.