Mafia II keeps crashing on immediate start (quick help)

[Pvt. Martin]

Every time I start it up, it immediately crashes.

Is there any fix that can help?

(I put quick help, because I don't really want a long discussion to take up in this forum, I just need a problem fixed)

[Nanamil]

Maybe you have the wrong crack.

[Pvt. Martin]

I bought it from yesterday's steam sale.

also I fixed it, I had to update the physx drivers.