Thank you for the input. I greatly appreciate it.
After some research I found that many users reset the WDTV to it's factory settings. I tried that and it worked like a charm.
In regards to the Plex installation, the Unraid Plug in WAS correctly configured. It was the plug in on the LG TV that was the culprit. There was a rather critial setting hidden several levels deep that needed to be enabled. It was called, "Enable Media Server". Why in the heck ISN'T this enabled by default! Anyway, I enabled it and it works perfectly now.