Be sure you clicking the icon of the TREE not the FILMSTRIP. I tried it and it shows.
Also, Bob be sure to try to clear out your cache and cookies, might have some conflict.
Also, Bob, when you click on the TREE icon, then on the CAMERA icon and the next window pops up, If your able at that time to click on the upper left BROWSE icon and see all your prior uploaded files, mouse over them and each one should show a small image of the uploaded file, if any only shows a empty box with the little red x I suggest you delete those because they could be causing a comflict too.
Good luck