Movies about moviemaking don’t come much drier than this new one from Romania. It has the usual elements of backstage stories—the director is sleeping with a cast member, professional rivalry rears its head, the movie’s gone over budget—but When Evening Falls approaches these things in an extremely off-center way. We never do see the film set (although the closing sequence takes place inside a makeup trailer that is presumably near the shooting), and the only actual footage we glimpse is from the director’s endoscopy. He’s been suffering from gastritis and . . . oh, it’s hard to explain.