how did you download it? through bittorent or through one of the sites?? The download may have been bad and it may have only downloaded a part of it and not the whole. This has happened to me on other games and i have had to re-download them. So what i would do. Restart, and see if that works, then if it doesn't, uninstall and then redownload the client. I don't know what else to give you, read all the top topics that were done by Dave. Try EVERYTHING...if nothing works, i don't know what to tell you. Its a really good game and worth the effort