May not be much help but right click in the 'box' that appears and copy the image location (image not link etc) to just quickly check if its not there / there. Mines doing a data:image/gif;base64,R0lGO type of thing. Just worthwhile seeing if it is really empty or not perhaps ?
Also quickly if possible test with another browser and/or clear that browsers cache. My thought here is to try with a different one to see.