After spending half of the last year developing Harvey—an adaptation of Mary Chase’s Pulitzer Prize-winning play about a man who becomes friends with a tall, invisible rabbit, which was previously a 1950 film starring Jimmy Stewart—director Steven Spielberg has decided to withdraw from making the film, according to Variety. The film was supposed to be the first Spielberg would direct for the reconstituted DreamWorks. According to insiders, apparently the main problem was casting (Spielberg reportedly wanted both Tom Hanks and Robert Downey Jr. in the role, at different points), although the director’s rep wouldn’t give a specific reason for his exit from the project.