It's super early in the game just after you find the argo. If you win it, the game freezes. You don't get loot or credits or anything. Tried 4 times now, I give up on it. I wanted the marik faction.
*edit* It seems the other mission option also maks the game crash, so you're left with no option but the story mission, which you fail because you can't do the others to get better stuff.

Just wanted to toss a warning out there.

No, that's just your rig. It seems there are some bugs in the game that some people are experiencing, but what you're describing didn't happen for me, or the people I know who are playing it, so it's certainly not going to happen to everyone. I assume you mean the "Sending a Message" mission. It works fine. I've made it probably past the halfway point of story content without a single crash or gamebreaking bug, so it's certainly your hardware or drivers.

You should put posts like this in the proper game subforum.