This update has been an absolute disaster !!
I was running v126.96.36.199 - WD Smartware advised me to update. Downloaded update and tried to apply it - failed.
Rebooted and tried to update again - failed.
Rebooted and tried to open WDSmartware assuming MSI had reverted back to v188.8.131.52 - nothing !
Tried to reinstall v184.108.40.206 using previous updater - failed saying I was already running v220.127.116.11.
Tried a repair - failed saying couldn't find critical MSI files in C:\Program Files....
Tried to uninstall - failed.
I am now locked out of my WD drive with its vital data as WD Smartware won't run to allow me to enter my decryption password.
Thanks very much for nothing !!!!
O/S - Windows 7 Home Premium SP1 X64 with all MS patches.