Can't get My Passport Essential to back up - no run backup option?

Hi, I cannot get My Passport Essential to back-up since I erased its drive.

I don’t have an option to ‘Run Backup’ anymore, only Start Backup and Stop Backup. It recognises that I have data on my PC to backup but does not do anything, even when I try to manually start it.

Help?! Thank you :cry:

I’ve tried to reboot it and after I’ve unlocked the drive, it says ‘No writable WD Smartware partition found’ - ?

I’m having the same/similar issue.  Since installing, I haven’t been able to figure out why My Passport won’t backup though it’s prompted ‘start backup’ and ‘stop backup’, even as the ‘start backup’ is highlighted as if it is backing up. 

I have Win XP SP3 and figure maybe my driver isn’t compatible unless there is some other issue which hopefully isn’t too far above my newbie level knowledge base.