So I'm in the second mission, where you land near some door because of an Elevation Error. It says I gotta hack a terminal, and the arrow points to a small computer like thing on the wall, I go to it and the arrow changes to the giant door, but after that nothing happens. When I get near the computer thing, a red-orangish circle appears and when I move away it dissapears. There's only a car with a turret, and that's it. I'm stuck there. Any ideas?