Corrected entry: In the scene where Logan sits in front of the computer and learns of his mission: Logan's speech including the words "You mean nobody's ever been renewed?" (by Carousel) makes no sense at all. He seems shocked, and says "but everyone believes that some." But the computer has said no such thing, never implies that none renew, only that some runners escape.
Corrected entry: When Logan and Jessica decide to return to the city, they go down to the bottom of a fountain where there is a little pool of water and jump in. When they and all the people from the city arrive back at the fountain, they arrive at the top where there is no way of exiting.
Corrected entry: When Logan and Jessica escape from the city, we see them run down a huge staircase. Later on they take an elevator up to the Earth's surface. But the elevator (on which they rode up) doesn't appear to be travel much higher than the distance they already ran down. They should still be on the level of the city, or not much higher above it.
Corrected entry: Jessica and Logan are first seen wading in water toward the Washington Monument with the Capitol building in the background. Judging from the proximity of the Monument and the fact that we cannot see the Lincoln Memorial, this places them in the reflecting pool, walking away from the Lincoln Memorial. The next scene is of them walking into the Lincoln Memorial which they were walking away from. (01:17:55 - 01:19:40)
Corrected entry: In the shiny robot's ice lair, Jenny Agutter and Michael York strip off their wet clothes and you can see that Jenny Agutter wasn't wearing any underwear, but when they put their clothes back on and start running away from the robot, Jenny slips and falls over and you can see that she is wearing underwear. (01:09:55)