Password does not work from networked computer

I have set up my WD 3TB My Book and its working beautifully on the PC I set it up on, and my Android device. 

However, There is a second desktop PC on my home network, and it can view the “Public” folder. I set one folder to private, and password protected it through the WD Dashboard (at least I think I did, haha). I cannot access this folder on the other PC. It prompts for a username and password so I use the one I set up in the Dashboard, but it says Access Denied. 

**Edit**

Post-reboot on the PC I set it up on, I can no longer access that folder here either. It prompts for a password, and nothing I try works. 

It is due to how you login the first time to view the Public folder.

http://community.wd.com/t5/My-Book-Live/Unable-to-access-private-folder-of-one-of-the-two-MyBookLive/m-p/585526/highlight/true#M24488