We`ll try to fix this for you personally. Some questions to get things started:
1) Did you play Dawn of Fantasy beta?
2) Can you confirm you installed the Game, entered your CD Key, and now it created Dawn of Fantasy icon on your desktop?
3) When you start this icon it Shows Loading Updating stuff, and then Updater crashes?
4) Inside your Dawn of Fantasy installation please look up 1 file: updater-log.txt and please include it with your reply (you can use forums Attachment Manager to post it)