Thumbnail for Home Movie

Another thing that I just tried and is weird:  I placed a jpg for a movie in the folder and renamed it to match the movie.  I didn’t like the way it looked so I deleted the jpg from WDTV internal drive…WDTV Hub then said “compiling media library” so I thought it was removing the thumbnail, but it still shows up as a thumbnail…???  I must be doing something wrong…

-Bill