Over the last 24 hours I've played this Pandora Tomorrow level at least 6 times in an attempt to get through the final door (see the last couple of sentences in the "Medical Box" section here: http://au.guides.ign.com/guides/552407/page_23.html.

I have killed / knocked out every terrorist + "real" person from when I first get out of the truck to when I get to this door, but every time I get there the door's jammed and Lambert says "You still have 2 terrorists active, Fisher. You have to kill them." There are no terrorists left that I can see and I should know having done this part of the level over and over and covered every inch of the place. Is this a glitch? (the message came up a few times if I left the guy with his dog alive, in the car park). Can I somehow get up on the moving conveyer belt in the big room? The walkthrough doesn't say.

I obviously can't go on with the game if I don't get this worked out. Frustration plus lol... Thanks for your help :-)

Well, i'll answer myself and that is that it's a glitch in my game. When I went back to check on the people I'd killed they were alive again. If anyone reads this and has a save game for the level after, if you could let me know if you can email it to me that'd be great.

Did you try killing them a 2nd time and still get the message?