I got Jack about six weeks ago, and he's been pretty healthy - up until the appearance of this scale rot. I didn't really even think about the humidity as the higher levels haven't affected Atilla (my 3-yr-old bp).

Anyway, I've taken your suggestions to heart, and cleaned out his cage thouroughly. The area around his water dish was icky and wet which probably contributed to the problem. Hopefully this clears out.

(Both of my babies are now at a comfortable 55% humidity now...)