Conquest of the Horde

Am trying to patch up to 3.2.0 but when it finish's I get this message

The update completed with the following warnings:
<UnableToAddWorld of Warcraft UpdateToGamesExplorer>

What can I do about it?

Vixeth Wrote:<UnableToAddWorld of Warcraft UpdateToGamesExplorer>

Do you have windows 7? Cause they have a 'Games Explorer' which I think is your problem.

I've had the same issue pop up before on another computer - it's meaningless in the big picture. The game still updates fine. (Or at least it did for me)
After that, just patch up manually to 3.2.2a