Be sure to have the latest Smartware version installed. Check the links below for the steps to uninstall Smartware and download the latest version.
How to uninstall WD SmartWare from Windows (7, Vista, or XP) and Mac OSX (10.4, 10.5, 10.6, and 10.7)
http://wdc.custhelp.com/app/answers/detail/a_id/5373
Smartware download