that message is showed when the bytes to modify are not found in the file.
there are two possible hypothesis:
- you have already patched the file (maybe you already patched it before, I don't know)
- the executable has been manually packed or compressed (for example with upx or pecompact) and so the bytes can't be found
anyway for being 100% sure I suggest you to apply the patch #3 of Sacrifice which updates the game to the latest known official version:
http://gamesurf.tiscali.it/dynamic/disc ... GINA/patch*edit* found a better patch link