I had this situation when I installed Adblock Plus add-on for Firefox. It blocked Flash Player right after installing it.
Since Flash Player was blocked I got a message:
"Image type and information need to be specified for each store view"
I had this situation when I installed Adblock Plus add-on for Firefox. It blocked..and Browse/Upload Images Flash Player right after installing it(buttons and functionality in general) became unavailable.
Answer from @JonathanDay gave me the clue it was Flash Player.
- And yes - Flash Player is used in Magento's image uploading section.