Why after having used Time Machine Artlantis can't be serialized?
When you are going to use Time Machine, before doing it please think first to unserialize Artlantis. If you have not unserialized once Time Machine will have restored your Mac you'll not be able to serialize again.
In this case please contact our technical support.
Mac OS 10.6.x
Mac OS 10.7.x
Mac OS 10.8.x
Mac OS 10.9.x