Other mistake: In the aerial shots of the semis being driven in the mall parking lot, the zombies are milling about. Notice they have left a path just clear enough for the truck. (01:02:40)
Other mistake: When the bad guys are taking the cash from the vault, they finish with just 3 duffel bags. Yet there are blocks of cash along all the walls, roughly 25 times as big as what they're taking. With the duffel bags supposedly containing $100 million, there would be tens of billions of dollars for the taking. Their escape route is up the elevator to the roof, and into a helicopter. What bad guys wouldn't take all they could carry?
Other mistake: The flashback that shows when the culprit is able to inform the accomplice that Mrs. Ottenbourne is about to expose them differs in many small details from the original; when she enters the room, Ustinov by the door fixes his jacket with one hand, and in the original scene he did it with two, when Simon urges her to tell the story from the beginning she has her hand on her chest in the flashback and not in the original. And her last words are "I saw that it was" vs "I saw it." This is no subjective, hypothetical flashback. (01:48:05 - 02:10:05)
Other mistake: When Bruce escapes from the avalanche by hanging on a tree, his movements are played at a normal speed, but the avalanche wave (superimposed footage) is moving at a slow speed.
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)