I don’t like horror movies, personally, but even if I did, I think I would still have a problem with horror movies that begin under such a false premise. “We have to find evidence of this ghost before the building is torn down.” No you don’t. You absolutely don’t? You can if you want, but you don’t HAVE TO.
I also love “don’t go in the basement” followed by half the movie takes place in the basement. OK, well then no sympathy for these dumb slabs of ghost food.