Homeworld 2...

[Thexare]

.. The crack? Are you using an illegal copy of the game?

While that's generally a safe assumption, some people use a no-cd crack for convenience, even though they do have the game.

I don't know about Homeworld 2, but the cracks for some games create a different exe that you have to use instead of the normal one, rather than simply overwriting the normal one. Maybe that's the case here?

Not sure exactly how long this topic will last without getting beaten down by the mods, honestly... some forums are extremely sensitive about that sort of thing.