Character mistake: During the meeting between Langdon, Sophie and Sir Teabing, Teabing refers to Scatoma as "the mind seeing what it wants to see." Scatoma refers to a partial loss of vision. He probably meant to use Pareidolia, which refers to seeing patterns that are not really there.
Character mistake: The bank robbers send out a hostage and put a drawer around his neck with a note. The drawer is bugged and the bank robbers can monitor the police. The police just leave the drawer lying around on the table for half of the movie inside their mobile headquarters. This drawer should be in a forensic laboratory being checked for fingerprints and similar.
Character mistake: Declan tells Ethan that 162 (meters) is "pushing minimum height for a (BASE) jump." This is not the case. It's not uncommon for jumps to be made from sub-100m heights. In fact the lowest BASE jump was debatably made from the hand of the Christ the Redeemer in Rio at 29 meters. However it must be said that jumping between buildings, like in the movie, is extremely dangerous and carries even more risk than just normal BASE jumping. (01:22:20)
Character mistake: When Nicholas Cage bumps into the beehive, he sees the bees coming towards him and runs towards all the other beehives. Given that he bumped into the beehive on the outer edge, it would have been safer, quicker and much less risky to run back the way he came to escape than run towards all the other bee hives. To complicate things Cage knew he was severely allergic to bees.
Character mistake: When Bond is sending his resignation email, another email titled "Stationary Request" is visible in his outbox. The grammatical mistake (it should be "Stationery Request") seems to be an unusual error by Bond and not quite in keeping with his character, his assumed background or his smooth way with words.
Character mistake: The Daily Mirror, at the beginning of the movie, reports the fatal accident of the soccerplayer with the spelling "fatale".
Character mistake: During the funeral at the end before the 21 gun salute, the NCOIC called for "half left face", that would cause everyone to get shot in the face.
Suggested correction: Half-left face means a 45° left turn (left face is a 90° turn), so wouldn't result in anyone getting shot.
Character mistake: On the refrigerator is a letter from the Department of Defence - Defense is misspelled.