Academy Award-winning filmmaker Oliver Stone, 52, has pleaded innocent to drug charges (including possession of controlled substances and driving under the influence) stemming from a traffic stop last month. Stone was stopped June 9 by a Beverly Hills police officer who said the director was driving erratically. Police said they found hashish in his 1987 black Ford Mustang. Prosecutors said Stone’s blood-alcohol level was above California’s legal limit of 0.08 percent when he was arrested.