I'm not able to add images to any sets. Marketplace, my own custom sets, brand new sets made on a new account, nothing. I'm hoping to learn if it's somehow a "just me" problem, for which there might exist a work-around, or if nobody can add images to Token Marker sets. EDIT: It seems it's only affecting images if at least one in the batch has a '+' character in the file name. I still can't see anything in the rename screens, but renaming the offending file lets me upload images, and then rename them afterward. (Still can't add a '+' character.)