I was just adding a couple of programs to a folder I have for tv .I right clicked on one to go to properties so as to update artwork etc.First one ok,second I could not open properties,screen seemed to freeze for a second then all thumbnail and folder art disappeared.This has happened to all artwork,of all folders,however if I click on properties for each, all info and artwork is shown.This is all on my pc server.If I open Mezzmo on my android tv all appears as normal.Any help for be greatly appreciated.