Unlock application?

wd error.jpg

This message just began popping up out of nowhere and my smartware CD is long gone. I’m running on a macbook air. I downloaded both the firmware updater and the software installer from the WD website (both were under the only VCD category) but neither of them allows me to actually open my drive and neither gets rid of this error message. What is the unlock application in question and how do I get it? 

Hello, did you ever got to create a password to lock your hard drive?