Other mistake: The place where Alex drops the needle onto the record is almost immediate, but there is a pause as she steps out onto the dance floor, when the music should have started.
Other mistake: Travers arrives in Los Angeles and is seen at the airport and the hotel a short time later with just a small suitcase and a smaller carry-on bag, yet she has far too many clothes-suits, dresses, skirts, sweaters, blouses, sleepwear, shoes, and other accessories-than could possibly fit in them. She is seen leaving L.A. with an additional suitcase, but the third one appears to be one that is just used for carrying the big Mickey Mouse stuffed toy she takes back to London.
Suggested correction: There's nothing saying that she had to have taken all those clothes with her. It's possible that she had more clothes sent on afterwards. Maybe the extra clothes belonged to the hotel/studio etc. Maybe they were rented. Who knows? Just because it's not explained, doesn't make it a mistake.
Other mistake: The suit jackets that Buddy and JP Richardson were wearing at the last concert had to have been sewn incorrectly, especially the sleeves. The seam at the top of the sleeve caused bunching all the way down the sleeve. Buddy's jacket looked like it was buttoned incorrectly at the top, but it was probably also a sewing mishap and poor fitting. So, the way the jackets were sewn was one big mistake (or wardrobe malfunction). (01:40:44)
Other mistake: When Evan is conducting the orchestra, his conducting pattern does not line up with the downbeat of one as the camera angle changes.
Other mistake: After the piano is delivered to the Girl's house, we see her mom cooking. There's obviously nothing in the pan despite her vigorous stirring. (01:19:35)
Other mistake: On the assault course Hero and Rockbottom are wondering how they are going to get to the concert now that they have lost their van, Rockbottom says that they are well out of the London transport system but when they are on the zip wire you can see two red London transport buses on the road outside.
Other mistake: Keira Knightley looks down at her phone, there is a beautiful female hand holding the phone with long slightly curved nail beds. This is not Keira's hand which is seen many other times times throughout the film. She has shorter nailbed and flat nails. (00:22:37 - 01:13:56)
Other mistake: In the opening credits of the movie, actress Luana Ravegnini's last name is misspelled as "Ravagnini" (00:01:20)
Other mistake: After her mother dies, Daisy puts her head in the oven and turns the gas on by turning the red button clockwise - we can hear the gas. But then someone is at the door, she turns the red button clockwise again, not anticlockwise, and the gas shuts off.
Other mistake: Mr. Phillips told Michael (Danny) that he'd like to hear him play on his "Steinway at home", but didn't say when or give Michael his address, but Michael was able to ride his bike to the Phillips' house. Michael was in this new school (and State) for only one day, so it seems unlikely that he'd know where Mr. Phillips lived. (00:26:33)
Other mistake: When Doolittle is running his jeep up the muddy hill near the beginning, the landscape changes. The hill is a straight 40° angle, but in the close shots behind the wheel, it changes to a steep 80° which no vehicle could realistically terrain, except perhaps an army tank. And he stalls out several times and has to back up, which would not happen at the 80* steep. Then he miraculously makes it over the top.
Other mistake: On 22's name-tag wall some of the names repeat themselves. Yossi Mizrahi and Itay Cochabi can be spotted twice, once towards the center and once towards the right side of the screen. There might be more.
Other mistake: Newscaster Hoda stated that Kat and Bastian would be making history when they exchanged vows "in front of the whole world, 20 million people." IF everyone worldwide watched, the figure would be over 7.8 BILLION. Justin told Collin that Kat and Bastian "have a social reach of over 200 MILLION people." Hoda might have meant 200 (not 20) million. (00:01:02 - 00:01:55)
Other mistake: The protagonist uses his belt to temporarily fix the movie projector. He has to keep his pants on with his hands, but that's only until he has to grab an object and the pants do drop. Then he is still belt-less but the gag ran its course and his pants are not falling off anymore, once was enough.
Other mistake: In the "Peter and The Wolf" segment, Sasha the bird has a flesh-colored head. When he puts on his black cossack hat, the flesh areas of his cheeks and the flesh area between his eyes instantly turn black.
Other mistake: When the movie starts and the reverend is talking, he smacks the Bible. Right afterward, a kid in the audience can't help staring at the camera.
Other mistake: During the murder in the stairwell, an old woman opens her apartment door outward, and Varg kicks it shut. Apartment doors always open inward, as did Euronymous' apartment in the same building.
Suggested correction: Euronymous' apartment door opens outward into the hallway, at least in the final scene it does when he's trying to get away from Varg.
Other mistake: When Jack and Rocky get on Ed Sheeran's plane, they are carrying 2 guitars. After the Moscow concert, before the 'song challenge', Ed says Jack wrote 'Back in the USSR' on a 3 hr plane flight with no guitar on the way to the show. (00:37:38 - 00:38:38)