Melt margarine in a small skillet over low heat; add pecans, and cook 3 miinutes or unitl toasted, stirring frequently. Remove from heat; stir in vanilla wafers and cinnamon. Set aside. Spoon 2 tablespoons pie filling into each of the 8 parfait glasses; top each with 1/4 cup yogurt and 1 1/2 teaspoons crumb mixture. Repeat layers. Serve immediately.