No One Lives Forever Help

[SpOoK]

Hi,

I've just backed up No One Lives Forever using PrimoDVD but when I try to play, it doesn't boot i get nothing just a blank screen. Is there some sort of protection on this game or is it just a dodgy backup?

I was using the Pioneer A03 -> DVD- R White Top General Purpose Media. PS2 with NEO4 Using the DVD Swap trick.

Thanks for any help.