A couple days ago, I turned off my TV and noticed it switched to some of the stock art that comes with the TV. I'm an Art Store subscriber, so I went to reselect something from my favorites album and saw that all my selections were gone. I think the one I had displayed most recently may have actually been removed from the art store, which might've caused the problem. But at least some of the others are still available in the store but no longer appear in my favorites or recents.  How do I get them back?