all lies mate.
the crack will let you get into the game, but will prevent you from progressing past the tutorial mission. There are threads all over the shop about it.
My advice - buy the damn game and play the arse off it. It's not all there yet but it's still a damn good game, and we all know it'll be even better once the community is done crawling all voer it.
recommend a mod locks this thread soonish.