If Lightfoot's suggestion doesn't work, contact Atari.
http://www.atari.com/support/atari (there's already a pregiven option for faulty cd-keys).
You can first try to register the CD-key online. Sometimes the HoTu CD-keys can be registered as SoU keys, then you'll know for sure something's wrong with the key. You can do that here:
http://nwn.bioware.com/ You'll need to register first.
Modifié par Eva_hop, 30 novembre 2010 - 10:09 .