The driving scenes frequently switch between day and night.
When the doctor is about to crawl in to the ship he's handed a gun. When the camera angle changes he's shown wearing a holster on a belt with the gun in the holster.
While driving back to the cone, scenery changes constantly from night to day.
After test-firing his gun into the cone, the star's next action is truly inexplicable as well as poorly edited; then when exiting the cone, he puts on his holster.
A group of people investigating part of an alien space ship split up to search for other sections of it. There's a close up of a couple in a car and the background shows that it's obviously night. A long shot of a car approaching is in day light then the next car seen is and it's night then it's daylight when a fourth car is seen.
During the mayor's autopsy the doctor says that the people affected by parasites would live only 24 to 36 hours. Some of the parasite controlled people live through the whole movie. Longer than what the doctor states.
When couple are in the cabin coughing, they open the window to escape the smoke - which is only outside the window.
When Dr. Kettering fires the pistol into the craft's tunnel, it demonstrates that the bullet ricochets throughout. However, what is heard is not just the ricochet but also the sound of several gunshots though the gun was discharged only once.
During the fist fight it changes from day to night when closeups are shown.
The creature-controlled Alice gets her night-gown trapped in the car door as it drives off from her house.
Ten and-a-half minutes in, one hears a mysterious 'horking' (throat-clearing) sound from the set.