1.6.4 is the only version I have used. I have an HP all-in-one computer that was purchased with windows 8. The WD drive keeps disappearing. When you open file explorer sometimes it is there. But it usually disappears after a few days. Sometimes you can get it back just by removing the usb 3 and reinserting it. Sometimes you have to push the button on the back of the WD drive itself. Sometimes you know it is not there because the WD software seems to be running continuously looking for it. However at the end of the day the Backup and Retreive tabs are constantly greyed out, meaning you could never access the backed information even if it was needed. This defeats the purpose of backing up.
So in my case, I have a problem with the hardware and the software. I just wish I had looked at this community before I purchased.
