First thing that comes to mind: Did you delete items from your art library? That is where the graphics actually reside. Assigning them elsewhere in the program (to a token or the table top) is only a reference to the original in your art library. Other possibilities: Does someone else have GM status in your game? If so, could they have deleted content? Have you recently deleted a game? If so, was it the correct one? Have tried the game in different browsers and/or let the load process continue for a while? It might be a bandwidth issue. If it's not a case of deletion and you suspect a glitch, you can try reaching out to <a href="mailto:team@roll20.net" rel="nofollow">team@roll20.net</a>