Director Robert Luketic has abruptly quit the big screen remake of the hit 1980s TV show Dallas, because he was unhappy with some of the casting choices. The Legally Blonde film-maker was set to start shooting in October (06) and key cast members are still being finalised. Among those actors already on board to play members of the EWING clan are John Travolta as JR, Jennifer Lopez as SUE ELLEN, Luke Wilson as BOBBY, and Shirley Maclaine as MISS ELLIE. A source tells US magazine People that the director was unhappy with some of the studio's choices for the roles and decided to walk away from the film. No details were given regarding which stars the director objected to. Doctor Dolittle director Betty Thomas is being considered as a possible replacement for Luketic.