This appears to be a conflict with some of the other scripts that use the zlib. I haven't really looked into it too much, but I know you can't update any of the additional scripts like the macguffin otherwise they conflict.
I wanted to add Spring Raindrop to the script as well. I couldn't decide where to put it, I was thinking about adding it to the safe adventuring part of the script with steal, but finally just added it to the end.
if (equipped_amount($item[haiku katana]) > 0) try_skill(url,$skill[spring...