Corrected entry: In the scene where the generator runs out of gas and Neville rappels down the elevator shaft to refill it, Lisa is startled when she hears the elevator coming up to the top floor. The problem is the elevator was already on the top floor when the power went out.
Corrected entry: The mutants are supposed to have low tolerance to light and yet they run around carrying torches.
Corrected entry: When Neville is fixing himself a drink at the bar, he plays an eight track tape. What's powering the tape unit and amplifier?
Corrected entry: When Neville first drives into his garage, all of the lights are on although he hasn't started the generator yet. Also, the electric garage door opener works. (Could be on batteries, but not likely.)