Aw, I really wanted to like this movie. Followed the drama for a long time, were they going to make another Ghostbusters? It had to be funny or it wasn't going to work... so they didn't do it. After Harold Ramis died it was pretty much over, except now they could just push a crap movie through. I would be embarrassed to have been involved in this movie.
This movie failed on many fronts. It is not funny. All the lead roles are poorly acted. The script is poorly written. Watching Melissa McCarthy massacre this movie was pretty painful. This is what happens when you get a weak director (Feig) who lets his actors run the show, you get Melissa McCarthy running her mouth over everyone's lines, doesn't even allow time for a punchline to land before vomiting more dialogue all over the screen. One gets the impression that the director just said just "keep babbling pedantically, It doesn't matter what you say." There isn't one solid delivery in the whole film. I can't even recommend this as mindless fun, because it is far more annoying than enjoyable.
This movie basically has no plot, there is no real sci-fi/supernatural aspect just pointless ghost encounters. What plot points there are do not connect logically. There was opportunity for intelligent humor (like the original) but they went straight for the lowest common denominator. Movie goes right for the fart jokes skimps on actual comedy.