When I first started using this script when it first came out I was getting this error, and I can't remember if/what the fix was, or if it's even the same thing, but I'm getting this error nonetheless.
Code:
[10888] Fernswarthy's Basement (Level 0)
Encounter: The Beast with 256 Eyes
Round 0: bazaaretw loses initiative!
Bad monster value: "the beast with 256 eyes"
You don't seem to be in the basement, quitting