The suits at Morgan Creek International hired the ascetic Paul Schrader to direct this fourth installment in the Exorcist franchise, but after screening his finished product they decided there was too much yakking and not enough puking. The film was shelved, and Morgan Creek started over with action director Renny Harlin (Cliffhanger), whose silly Exorcist: The Beginning flopped in August 2004. Now Schrader's version has been released, and though it's better than Harlin's, neither movie is worth seeing except as a doppelganger. Schrader has a much cleaner story line, and the Calvinist mortification that runs through his work is more palatable in this cheapo commercial context. But the last hour is so slow I began to wish for a little of Harlin's trash-can banging. With Stellan Skarsgard and cinematography by Vittorio Storaro. R, 117 min.