Following ebuilds do not declare IUSE variable: app-crypt/asedriveiiie-serial/asedriveiiie-serial-3.4.ebuild app-crypt/asedriveiiie-usb/asedriveiiie-usb-3.4.ebuild app-crypt/asekey/asekey-3.3.ebuild (see bug 224271).
thanks Marek. Fixed.