There appears to be a bug with Isocon Linux 0.8.2.
When I select an image to be a token, it become surrounded by a blinding white light that blots out a sizable amount of the screen and totally obscures the token, I am not sure why. I can PM you an image of the bug if you wish.
I'm tracking this at https://github.com/delzhand/isocon/issues/430 as well. Are you on a GPU or integrated graphics?