Hi guys,
Have you tried pausing and restarting the downloading?
I found that helped me in the past when I had issue downloading the game the first time.
If you are still having problems as I'm not very technical I can't offer much more then asking you to contact our support:
http://support.my.com/games/kbPage/3/ (this would be the best option until the tech page is available)
-Wraith