The first thought that comes to mind is that the graphics you were using were from the "From The Web' section of the graphics search, and from a web-server that just went down -- as unlikely as that is, it's within the realms of technically possible. If you remember the art you used, see if it comes up in another art search. If not.... Regardless, could you please carefully work through the first three steps of our guide to Solving Technical Issues ? Step 1: Make sure to use the right browser Please check if these issues persist when using both Chrome and Firefox. Step 2: Ensure that there are no extensions/addons interfering with Roll20 Please disable all add-ons/extensions and anti-virus programs. Step 3: Clear your cache If none of the above succeeds, please thoroughly work through Step 4 . (Don't forget the complete Console Log, from before you move to the map in question and waiting for about a minute afterwards to make sure the console is done throwing text at you!) Thank you!