Ahh... digging around... I see it's been shuffled around, and the message with the ZIP info is no longer up with browse button. Ok. I see...
It doesn't help much for most users -- being buried down in all the detail -- but it's failry simple to change the text message in the language to indicate ZIPs of photos allowed (so it's up with the browse button).
Sorry. Can you move/remove this. No bug.