The storyline mission "Project Nightingale" has a little bug.
In the center of the two rooms before the forcefield you have one of Nobel´s crewman. If you tag him for transport one of the crewman in the cages disapears. Now you have to go to cage where the crewman has beamed out to tag him (the one you can´t see anymore), to beam out the crewman in the center of the room to the ship. This happend to me in both rooms.