Software Update - WD SmartWare Windows Version 1.5.1.6 (8/16/11)

The upgrade doesn’t complete. I get an ‘Error 1603’ message, and no upgrade. First I stopped virus protection, then attempted to install new version. As I type I’m trying to find version of current install, but I can’t access it. It constantly wants to close and posts a pop-up message: “WD SmartWare has encountered a problem and needs to close. We are sorry for the inconvenience”. Whether I send or don’t send, I must restart Windows to actually close WD SmartWare.

Please advice.