Other mistake: Lee has an Atari 830 Acoustic Modem, which has on its front panel an instructional "cord side" illustration, showing the proper direction for the phone cord when the phone handset is secured in the top two cups. The telephone's cord must be placed at the right side in order for the acoustic coupler to work, but in both Lee's and Magnum's closeups, the phone cord is on the left side, but the acoustic coupler works properly. This is impossible. Also noticeable in closeups is the covered brand name of Atari on Lee's devices. (00:24:20 - 00:27:20)
Character mistake: Rick says "It's working, here it comes" a second too early, when the kid hasn't finished typing the name and hasn't launched the search just yet. (00:24:40)
Character mistake: Waldo's database entry from the CIA archive is quite odd. The most striking part is the "Basketball scholarship, 1983." Despite the way Rick reads it and reacts to it, the only way it could make sense if it referred to Waldo's son, or he'd have gotten it at the ripe age of 42 and 20 years after graduating from Yale. But it makes no sense that it would be there on his file, and contrasts with the succinct file on Skuler. (00:25:00)
Audio problem: When Rick turns towards Magnum asking "Basketball?" his lips still move in the next shot without a sound. (00:25:00)
Continuity mistake: Overnight, Magnum uses the modem on his own. In the close-up when he picks up the receiver, the glasses on top of the tissue box are missing. (00:27:25)
Other mistake: When Magnum makes a typo with the "Torpo Corporation" name, he types "Torbo"; B and P are nowhere near. And to fix it he types a B, and backspaces. That's not how it worked, ever. (00:27:40)
Continuity mistake: When Higgins suggests "the standard double mirror device", TC's hand position changes between shots (fingers entwined, and then not). (00:29:30)
Continuity mistake: When Waldo's unbelievable story gets into the President stage, Rick has his hands on his hips in the wide shot, arms folded in the close-up. (00:31:40)
Continuity mistake: Holding the others at gunpoint, Waldo fetches the map from the table two times differently in two separate shots. (00:32:00)
Continuity mistake: During the hospital room dinner, Savannah reacts to Magnum burning his fingers by raising her hand from the table two times in two different moments. (00:34:30)
Revealing mistake: During the big fight between the robed felon and the diminutive protagonist, the little guy is replaced by a stuntman in all the wider shots. (00:41:00)
Audio problem: Waldo from the ground sort of grabs the arm of the villain who pummels him. There are at least 2 hit sounds that don't match with neither the ground and pound of the Bill Hader-esque villain, nor upkicks from the midget. (00:41:50)
Audio problem: When Waldo swings at the bad guy with the cane he just found, he does a war cry with his mouth hermetically shut. (00:42:05)
Continuity mistake: For the ending, Rick is shown putting on his pants. Few seconds later, when Higgins shouts "Your uniform!" at him, he's putting on the belt with the gun holster, but a few seconds later the belt he's trying to buckle is still the pants', and the gunbelt is still on the table. (00:46:10)
Factual error: Even if we ignore the Hollywood magic of the 80s when you can just get into the CIA database with an Atari operated by a kid, the modem also turns the hospital TV on. That's quite the omnipotent device.
Other mistake: Higgins is outraged about a precious 1923 sketch being stolen by Rick's friend. Then again, that invaluable (as he puts it) piece of paper was stored in an open rack, rolled up with a rubber band. That's hardly how such an antiquity would be preserved by someone who finds it this valuable.
Other mistake: Magnum wakes up because Agatha and Higgins are playing with their model planes that loudly buzz in the air. He opens his bedroom window and here they are, by the guesthouse, with a direct view and Higgins waving at him. He then gets out to give them a verbal beating, and he's coming from the main house area. (00:02:15)
Continuity mistake: At the bar, Rick's sister puts make-up on. She leaves the necessaire on the table when she begins to disrobe. She then picks up the clothes, and the make-up tools changed place and multiplied, showing also the brush and an additional powder box. (00:10:30)
Continuity mistake: In the club scene when Magnum finds out Rick's little sister is not that innocent, the same extras do back and forth plenty times, sometimes back-back or forth-forth too with no continuity. One of the most obvious offenders is the girl wearing a red dress splotched with blue flowers; she is in every other shot at the beginning and comes from Magnum's left twice in a row. (00:10:35)
Continuity mistake: Magnum stands up to drag Rick's debaucherous sister to Bambi; a drink appears in front of the girl all of a sudden, and so does Magnum's beer. (00:11:55)