Corrected entry: When Dr. Channard is looking through the sliding panels at the really crazy patients in the padded rooms, there is a man with a tattooed head wielding a crucifix. The fact that he is in a padded room means that he is a danger to himself and would not be allowed a metal tool that he could hurt himself with. Also, the door on the inside isn't padded like the walls which it should have been.
Corrected entry: Despite being set in Britain, the detective that visits Kirsty is from the local homicide division. UK police forces don't have homicide divisions.
Corrected entry: The two uniformed officers are dressed like US street police and carry guns. UK police are generally unarmed.
Corrected entry: It was mentioned that the Dark God Leviathan suppressed the memories of the Cenobites in order for them to have no memory of their mortal lives. Pinhead did not recognize his own picture at first as well. However, after the Engineers got finished with Channard, he still remembers he is/was a doctor.
Corrected entry: In the first film, Frank had to steal himself a skin. Julia apparently regenerated a skin after killing some people because her bandages don't come off but a skin appears underneath them.
Corrected entry: The morning after Channard resurrects Julia, we see her standing at a mirror, and the whole of the floor beneath her is carpeted; yet when Channard walks across it, his shoes still sound as if he were stepping on hard flooring.