My Passport Elite, unlock pop-up gone since upgrade

Hi all,

Just upgraded my WD Smartware software to latest version, since doing so I no longer get the pop-up box when I first connect the drive to my pc asking me to enter my password.  I now have to open the software whether I want to or not, click on the My Passport Drive icon on the home page to being up the unlock password entry pop-up.  Technical help advises that Autoplay is not enabled on the pc, but it is!  Any ideas why this might now be happening?  It was much better before, connect the drive, pop-up box, enter password, easy.  This is a backward-step!