Cream margarine and vegan sugar. Beat in the water,Cointreau, baking powder, and salt. Then add the flour and finally the cranberries and nuts. On a greased baking sheet shape the dough into a loaf 3/4 inch high and 3 inches wide. Bake in a 325š oven for 35 minutes. Let cool for 5 to 10 minutes, then remove loaf from baking sheet and slice the loaf into 1/2 inch slices. Place slices on their bottom edge on cookie sheet, leaving a space between slices. Return to oven for 10 minutes or until the slices are just starting to turn golden. Cool and store in air tight container.