Ok, this is a very minor problem, after testing Mezzmo with a dummy set up i wanted to re-start the libary from scratch. Couldnt see how so i deleted the top level Video entry and re-created it, pointing at "My Videos". Now i have the Video main folder and under that the "Folders" folder, then "My Videos", but i have lost the icon! I can re-create the other playlists, no problem but can i get the default folder icon back or is there any way to re-set back to a state as per a clean install?

Thanks again for the support so far.