WDTV not detecting storage media

[Mr Flibble]

Hi!

I've got a WDTV player connected to a 500gb seagate USB hard drive.

Yesterday it stated there was no media present, so I've looked at the hard drive on my PC, and the folder structure is there, with all files still present.

The problem (I think) is in the WD_TV folder on the root of the drive. That's got a file in there called wdtv.cas.md5 on there. I've tried deleting the file, but windows states its corrupt/unreadable

Is there anyway I can delete this file? I think that if I do this, then reconnect, it should re-index the hard drive, and view all the files on there.

thanks!