Dead battery. It's very important on the 9-3SS to let the car sit with jump cables connected for ~10 minutes at least before trying to turn it over. The sudden voltage drop on a flat battery freaks out several of the computers. That's why you're seeing the 'Stability Control Failure' message.
Even better is removing the battery completely and putting it on a charger to bring it back up.
(Former) Saab Tech / Competition Prep