It's possible it's content that was cut or not actually required by the game yet. Those logs aren't for us, after all, but for the developers.
As others have also said, pretty much every single game will contain such errors in their logs. But the games run perfectly fine and as intended. So these errors really are nothing to worry about =)
In fact, I just installed my old retail version (the one that came with my graphics card) and it too contains all those errors in the log file. It's just a part of the initial loading process. You can safely ignore them it does not mean the game is missing anything.
Post edited February 24, 2009 by bansama