public function activate() {

			flush_rewrite_rules();

			$register = new MP_Calculator_Register();

			$register->create_page();

			if ( ! get_option( self::$prefix . 'mortgage_calculator' ) ) {
				$default_settings = new MP_Register();
				update_option( self::$prefix . 'mortgage_calculator', $default_settings->default_settings() );
			}

			if ( ! get_option( self::$prefix . 'style' ) ) {
				$default_settings = new MP_Register();
				update_option( self::$prefix . 'style', $default_settings->default_style_settings() );
			}

		}