Combine breadcrumbs and butter stir well. Firmly press into bottom of 9 in springform pan.
Beat the cream cheese at a high speed until creamy. Add eggs one at a time before adding the next egg. Add the mayonnaise and flour. Blend well. Stir in the crabmeat, cheese, chives, and pimentos. Pour into the prepared pan.
Bake at 325 degrees for 1 hour or until the center is set. Let cool to room temperature on a wire rack. Cover and chill for at least 8 hours.