Abraham Lincoln vampire hunter book is awesome, movie sucks

How in the hell can the same guy write an awesome book and such a shitty screenplay? How does that happen? Usually when they make a movie about a book, the book's author doesn't write the screenplay, it's unheard of. But this author got to, why not stick with what to you to the party? Seth Grahame-Smith,you write a book almost as good as the Divinci code. But wrote a campy horror flick from the 70's for your movie. The movie is totally different from the book! This movie sucked so bad, I can't even try to explain how disappointed I was watching this crappy movie. I kept saying to myself , what idiot wrote the screen play for this, it's nothing like the book. Just the fact that Abe hunts vampires is the only thing consistent between the two. I couldnt believe my eyes at the end and saw who wrote this crap. Seth, great book, terrible movie you dumbass maybe it might have been ok if you didn't read the book,...no way It still sucked If you read the book stay away from the movie Rating 1 (1-10)