WD TV MINI with WD MyBook 1.5TB.... not working!

I have just bought a WD TV Mini and have connected it to my 1.5TB MyBook HD that contains all my media files. All it displays are chinese characters as folder names?? And will not load any of the media files on the MyBook drive. I have checked in setup and it is set as ENGLISH language. Any ideas?? It does work with a smaller HD (imation). Many thanks