Try a power cord reset. I didn't do one but the Home Media works on the Hopper and Joey. Kind of. It finds my WD TV Live Hub and my desktop. On the desk top, no Playon it works great for the music. Even throws up the little floating banner after a bit. Videos it will play mp4 but not WMV or AVI. Photos are a problem. It can't see the My Photos folder. No big thing in my case since the WD TV does everything and the music works good on the Hopper and for me that's the main interest.
I do have a couple of other problems. I can no longer highlight Save when trying to set up a custom Favorites list. Also I wish the number of episodes shown for my folders did not include the deleted programs. That's just a nit to pick I guess but the Favorite list is an issue.
The fav list issue was fixed for me. Try changing your cursor to anything but invisible and you should see that it works. The buttons are not highlighted but they are still fully functional. If you know where you are on the screen, you can hover over and press select and they will respond as normal.