OFP Resistance: Serial Crack

[Geraint007]

Hi,
I'm having some trouble getting Operation Flashpoint: Resistance to work.
I've used the serial number given to install it, and I've applied the crack,
but when I run the game, it says "Bad serial number given in Setup", even
though I've entered the correct one.
Could anyone advise me as to a suitable crack, (or solution)?
Cheers,
Geraint