In 3 Tbls butter, saute garlic, and then stir in the flour and cook for about 1 minute. Add the cream and stir till thick. Stir in crab, chives, salt and pepper. Fold the filo sheets so they are 15 cm x 15 cm brushing each layer with melted butter. Put a big plop of the crab mixture in the center of each square, and fold into triangles. Seal and brush top with melted butter. Bake at 200ºC for 15 to 20 minutes, until they look perfectly browned.