Continuity mistake: When the karate kid first goes to Mr Han's house to train, he drops his jacket by the doorway. Later on as they are talking, you can see his jacket move to different spots on the ground between shots.
Continuity mistake: When Olive is at the ice cream store near the end of the film, she picks up a chocolate-coated cone off the counter and crushes it in her hand. However, in the next shot (as Olive walks away), the cone reappears intact.
Factual error: Milo gets out of the car to pump gas, but they are in New Jersey where pumping your own gas is illegal.
Visible crew/equipment: Several times during the movie, when Jacob rides his motorcycle you can see the camera reflection in his helmet.
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 Royce kills the Predator at the end, he slices the head off, and it falls backwards, and the body falls forwards. One of the next shots now shows the head to now be in front of the Predator body.
Continuity mistake: In the final dance Julien is wearing the samurai jacket, but when the camera changes angles and then focuses back he isn't wearing the jacket. This happens at least three times.
Other mistake: When the ride finishes, there is no sign of a safety bar in Gru's cart.
Continuity mistake: When Will has come to apologize and talk to Ronnie after she has left the volleyball game practice, Ronnie's father opens the door to a sweaty suitor. The door is closed and when it is reopened just a brief moment later, Will is no longer sweaty.
Factual error: When Ewan McGregor drives to Belmont MA to visit Paul Emmett, he checks the mailbox to see whose mail it's addressed to. It shows the name Paul Emmett, address, Belmont MA 02324, which is the wrong zip code; it is the zipcode for Bridgewater MA, and Belmont MA should be 02478.
Continuity mistake: When passing the lion in Trafalgar Square approx one hour in, the motorcycle sidecar swaps sides.
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.
Continuity mistake: In one of the final scenes of the movie, George Lopez and his wife are depicted on swings with two red wines placed on a table. The scene transitions into another couple and later George Lopez and his wife are shown again. This time they toast and drink the wine on their swings. However, in this scene the wine they are drinking is white.
Continuity mistake: In the scene when Dalton is climbing the ladder trying to turn on the light in the attic, it shows him stepping onto the same step twice.
Audio problem: When Scott fights Ramona's ex-girlfriend, Ramona holds his hands while punching her. One punch misses her but the sound of a punch is heard.
Continuity mistake: After the plane is docked Stallone and Statham enter the customs agency. Statham is wearing a camera on his neck with a small lens, he even shows it to the customs agent. After leaving the customs they walk across a square. The camera now has a big zoom lens attached to it. Statham is not wearing a lens bag. Where did he get that lens from? Also strange is that the lens is set in manual focus instead of automatic. Yet the picture stays focused even zooming in. This is not possible without looking at the screen. Plus the camera is turned off in the close up shot, with the image on the LCD composited in. (00:28:15 - 00:30:45)
Continuity mistake: Whenever Megamind or Minion uses the disguise generator, their normal eye colour always show through their disguises, such as when they both disguise themselves as the Warden (the Warden has blue/gray eyes while Megamind has green and Minion has brown). However, during the final battle, Minion disguises himself as Megamind but he has Megamind's green eyes instead of his normal brown eyes.
Factual error: The Lyceum Theatre, referenced in the film, did not exist in 1828 as it was not built until 1834.
Continuity mistake: When Travis is attacked by Barris at the end of the experiment, he "catches" the knife and his hand is seriously injured, becoming covered in blood. However, when the red light begins to go off and Travis raises his hands to his head, both of them are clean and uninjured. (01:25:25 - 01:26:45)
Continuity mistake: In the second scene where we first meet ranger Smith he is shuffling with some information pamphlets. When Ranger Jones yells his name he is startled and drops some of the pamphlets, but we can see that the last ones he put in were on their side. When the camera changes shots there appears to be some pamphlets sticking out. Then in the next shot they are gone. The pamphlets change locations between shots.