Deliberate mistake: DVD version : When Seagal flees from the dig, the car he drives changes from left side control to right side and back. (in close up - you can see the seat to his left).
Factual error: The movie takes place in Des Plaines, Illinois, with a couple of scenes from downtown Chicago. However, throughout the movie you can see both palm trees and mountains in the background, none of which actually exist in Illinois. The producers also point this out on the DVD commentary.
Revealing mistake: When Frank yells stop to Marion, you can see the marks on the road from a previous take. (01:05:20)
Character mistake: The letter from the FBI containing the results of the blood and semen test is filled with numerous typos. First, on the line "Subject: Result of examination requested", the word "examination" is misspelled "examnation." Second, the term "DNA instrumental analyses" has "instrumental" incorrectly spelled as "insrumental." Third, the line "Reference: Letter dated October 21, 1987", has the word "dated" misspelled as "dateed" and the month "October" misspelled as "Octorber." (01:58:35)
Other mistake: Marvin survives the explosion by hiding in the refrigerator, though despite the massive blast, there is no singeing, burn marks, or even smoke around the holes that were torn into the front of the door before the explosion.
Character mistake: The Cadillac is identified by Robby as a '57 Eldorado. It's actually a '57 Series 75 Limousine.
Factual error: The 4-wheel-drive Meredith van Aken is using to pick up Jonathan Cold and the black box has got a German registration plate for Berlin. However there are no discrimination letters after the "B" for Berlin, but a 5 digit number starting with "3." Only police cars carry registration plates like this in Berlin.
Other mistake: Garcia, in a manic moment, dips his right fingers into the bug's acidic saliva, then stripes his left cheek, where the acid eats into the flesh. A couple of minutes later, he dips the same two fingers back into the substance, and proceeds to stripe his right cheek, where the acid immediately starts eating through his skin. Oddly enough, the fingers aren't affected at all, despite being dipped into the goo twice.
Continuity mistake: In the beginning, The Statement is being typed on a manual typewriter and the name Pierre Brossard is underlined except for the letter P. The next time we see The Statement, the letter P is now underlined. There is only one copy.