YORK (AP) – A new trial has been ordered for a Lancaster County man sentenced to death in the murder almost a quarter-century ago of a York County art gallery owner who was preparing to testify against him in a sexual assault case. A Lebanon County judge ruled that now-63-year-old Kevin Dowling of East Petersburg merited a new trial in the October 1997 slaying of 43-year-old Jennifer Myers near Spring Grove in West Manchester Township. Senior Judge Robert Eby cited failure of a defense attorney to provide effective assistance and of prosecutors to turn over exculpatory evidence. A former prosecutor declined any such failure. The state attorney general’s office vowed an appeal.