Plot hole: In the end, all they have to do is ask the President, when he's conscious (Liev didn't kill him; he just knocked him unconscious), who killed everyone in the control room and nearly killed him. He would know who the traitor is and it's not Salt - when they look back at the facts, they'll see how Salt only killed when she absolutely had to, and how she saved lives and stopped a 3rd world war.
Visible crew/equipment: If you look closely, after the shootings with the Russians and the guys go in to the second room, next to Chris Brown you can visibly see the camera man (shorts and the camera).
Continuity mistake: Saw VII takes place straight after Saw VI. In Saw VI we see Jill put Hoffman in the bear trap and leave. We then see that Hoffman spends around 45 seconds trying to get the trap off before putting in the bars on the window. In this film however, just after Jill closes the door we see the glass break. No delay. (00:08:20)
Plot hole: When Claire is getting interviewed at the FBI building, there's pics of inside the bank during the robbery, even though the security tapes were destroyed in the microwave.
Continuity mistake: When Machete is picked up by Booth in the S-class, the car changes from an S500 to an older generation S-class, and then switches back for the rest of the film. The footage was from the trailer being edited in.
Factual error: In the very first shot of the movie, a clock is shown ticking. The time on the clock reads 05:59:56. It is obviously AM because a few seconds later at 06:00:00, Frank wakes up as if it was morning. As Frank sits up, clear daylight is visible outside of the window. This scene is supposed to be set during winter. We know this because there are many Christmas decorations. Since this is meant to be winter, it should still be dark at that time of day. (00:00:40)
Suggested correction: At the beginning of the movie it's September or early October if latest in the year. At Cleveland's latitude there's enough sunlight at 6am to experience such lighting through a window facing south.
First, what in the film places the opening scene in Sept or Oct? There's too much snow on the ground for it to be either of those months (it doesn't snow in September and rarely in October, but only late October). Second, even if it was set in October, the sun doesn't rise until around 7:30AM or 8:00AM.
I disagree. I think what Bishop73 wrote above is correct. The opening scene at 6:00 AM showed daylight, which would be too early for October, November, and December in Ohio. The movie apparently begins in December based on the amount of Christmas decorations in the neighborhood. Sunrise might be between 7:30 - 8:00 AM and twilight is about 30 minutes prior to sunrise. It simply would not be that light out at 6:00 AM.
Continuity mistake: In the getaway scene where Charlie Wax (John Travolta) reverses into a line of cars to destroy James Reese's SUV, when the SUV explodes the wheels on the SUV change to a stock rim, when it had large custom rims when he parked it.
Plot hole: Modern diabetes management will tell a patient immediately if their glucose levels are out of the ordinary. Results are not monitored and delivered to a county jail by an outside lab. If a diabetic is sick enough, they would have obvious physical indications. The entire escape plan hinges upon these fallacies.
Other mistake: Finbar is shown torturing a victim while the victim has his head in a halo used for immobilizing a person's head. The screws to hold the victim's head tight can be seen not to be touching his head, yet the victim is still bleeding from the screws.
Factual error: Clooney refers to the rifle as an "M14". The Rüger Mini-14 is a different rifle than the M14 (used e.g. by the Marine Corps prior to the M16).
Continuity mistake: When Derek closes up his back pack, you can see that it falls open again. When both Derek and Becca walk into the food hall, the backpack is now closed.
Continuity mistake: The blood spatter on the CCTV footage from the first shooting is a lot smaller than when the incident occurred. (00:14:45)
Continuity mistake: The sweat stains on the phone costume keep changing when in the police station. (00:12:00)
Factual error: The attack on the OPEC meeting in Vienna takes place on December 21. Yet, when Carlos' team exits the tram, the trees are full with green summer leaves and the sun shines as it would on a high summer day.
Continuity mistake: First when Carson kisses Rachel she's on his left side. When the kiss is over she's suddenly on his right side. (00:52:00)
Factual error: In the chase scene where Lou is running after the derelict, they pass a number of vehicles parked and driving on the streets. All of them are correct period vehicles for the late 1950s, except for a white semi truck which is from at least the mid 1990s. The grille and headlights on the truck are the giveaway. (01:23:20)
Continuity mistake: Towards the end of the movie, after Boyka gets out of the car with the briefcase, Turbo gets out after him and has a conversation. When Turbo goes back to the car, you see Boyka standing on the side of the road. There is only that one road in all the shots. In the next close up shot of the car door closing, and the car moving, we see the car getting out on to the road from a small by-lane (of sorts)! Where did this road come from? How did the car move places?
Audio problem: When Niko is going to get the key for somewhere for Zoe to hide and then Zoe disappears he says "Zoe"? When he says it his mouth does not move but once he finishes saying it that's when his mouth moves.
Factual error: When the Senator is looking at the rent ledger, there are entries for each property as well as the date that money was collected. One of the dates is 2/29/74, yet 1974 was not a leap year. The only leap years in that decade were 1972 and 1976. (00:56:30)
Factual error: The movie is set in 1979-1980. You can see vehicles all throughout the movie that were manufactured after 1980.