Files not displaying so cannot back up in My Book Essential USB 2.0

I have a My Book Essential USB 2.0 for Windows and when I open the WD software to back up files, nothing shows up either in the display for my hard drive or on the external drive.  When I open the external drive using My Computer, however, I can see the files that are on the external drive aleady.  I have reinstalled the firmware and the software and still nothing.  Any suggestions about how to proceed?

i just did a firmware update 20 minutes agor and my drive went blank as in i had no drive fixed with this site older firmware update i used mirrored site =)