The events depicted in the beginning of the original did not take place in 1978, like this film says, they took place in 1960.
Day changes to night and back and forth again many times, even indoors.
In the scene of the doomed lady in the bathtub, the tub is clearly lined with pink tiles. In the scene where the lead characters want to see the bathroom where this event took place, the tiles are now blue.
In the flashback scene where Annie describes the murder of the girl in a car, she says the girl's name is Andrea, but in next couple of flashback scenes where she describes the people on the beach, you can clearly hear the doomed girl being called Jenny in the flashback scene by her boyfriend.
The priest who gets stabbed in the back by numerous kitchen knives and tools is clearly wearing a padding under his shirt so thick that he looks like a car seat or a square-shaped hunchback.
This film shows many flashbacks to the first film's leading lady, Lacey (played by Susanna Love) but incorrectly refers to her as Natalie every time. Furthermore, the two others shown in flashback and referred to as her "mom and dad", were really her aunt and uncle.
The girl is narrating flashbacks that she would have no knowledge of, since she was 15 years younger and in another part of the country when the events took place.