Visible crew/equipment: When Eric is riding through the hills and fields away from the cops, with MAC in his lap, ramps can be seen to help him with maneuvering his wheelchair easily.

Audio problem: In McDonalds, when the cops come in after MAC, Mike is getting pushed by them, as they try to pass, and he shouts "What's he done wrong." yet his mouth clearly says otherwise.

Continuity: When Eric wheels himself outside in his wheelchair, to follow the footprints, as he exits the double doors, he goes down a ramp. Later, when his brother walks through the doors, the ramp has vanished.

Visible crew/equipment: When the MAC's emerge from the NASA craft in the lab, there a shot through the lab glass of the father MAC, with the reflection of a cameraman holding a camera in the glass.

Visible crew/equipment: In the pile up scene, due to MAC covering up a man's windshield, a huge truck swerves and flies over a car, only the big black ramp used for the stunt is rather visible.

Continuity: When MAC is blown by the helicopter, he lands on a man's windshield, and the man has to start dodging traffic. Between shots the traffic he is dodging changes.

Continuity: When Eric following the wet footprints outside, to the edge of the lawn, the footprints change in appearance drastically, between shots.

Continuity: When we see the two holes drilled through the wall, by MAC, there is nothing above the holes being made, yet in all the following shots a large painting is above the holes.

Visible crew/equipment: When the man's car swerves out of control after MAC lands on his windshield, a pile-up occurs. In this scene, it can be seen that the drivers are either absent, or dummies.

Continuity: When Debbie's mum stops the car, as MAC speeds past them on a remote control car, she parks on the right side of the road. In the next shot her car is on the left, then back on the right.

Continuity: When Debbie is putting Mac, who is hidden in a teddy suit, into the back of her mum's car, as her and Eric leave to go to Brittany's birthday party, the car window changes from halfway rolled up, to fully rolled up between shots.

Visible crew/equipment: In the desert, after MAC communicates, he stands and points, and then Eric, Debbie and the others drive him away. However, in the shot where he stands and points, the outline of the puppeteers hand through the red shirt is very visible. It is also visible at other points as well.

Continuity: When Eric and the others find the MACs' in the old mine, they give them drinks. The MAC by Eric then begins to stand up. Between shots a long strip of black bin liner appears over his legs.

Continuity: After offering MAC the drinks of water, Eric pulls the drink away from him twice.

Visible crew/equipment: MAC is grabbing the electric fence, being blown backward by the helicopter. When he releases his grip, wires can be seen attached to his hands.

Continuity: In the van chase scene, Mike is hanging out of the window trying to pick up Eric in his wheelchair, as they flee from the running cops. As Mike tries to pick up Eric, his sunglasses keep disappearing and reappearing.

Visible crew/equipment: A wire can briefly be seen on MAC, as he does the flips in the air, in McDonalds, in the teddy suit.

Revealing: When Eric and Debbie enter McDonalds, they go to a table and then Courtney comes over and gives them a drink each, however it is clear that the cups are empty, as they are clear and move around lightly and make hollow sounding noises.

Continuity: In the panning shot of the NASA lab, the clock's minute hand can be seen on the half hour mark, yet in the close-up of the Professor, the time reads eight twenty.

Audio problem: When Eric is riding through the shopping centre, away from the cops, his mum is riding the escalator when she hears him. She then says "Excuse me, I'll be right back," but her mouth says something else.