I had the problem clicking on the terminal the screen freezes not allowing the mission to complete. Reading your post to log out and log back in helped. After I logged out and back in I was able to complete the mission.

I was having the problem of launcher crash when clicking on play after the update went into effect. Last night I logged in and it downloaded a file ?? 116. Then I was able to play the game as normal so I believe the issue has been fixed. There is no need to revert to pre patch version and have issues with that. XP users should be able to resume playing now. I figure they got lots of complaints so they addressed the issue as promptly as posssible. If you still have issues call costumer service for more information and notify them of the issue so they can work to resolve it.