I need help extracting gamefiles from the WoD-Beta. Ladik, who made the MPQ-Editor recently made CascView, a program to extract files from Blizzards new Casc-system. The problem is, I don't know how to use it. I downloaded the program, but when I try to open the WoD Data-folder using the "Open Storage" button nothing happens. I read his description on the download page but I can't see what I am missing.

Maybe someone here can explain how to use it in an easy way, thanx.