I am getting "unknown Zatara clan: clan" message and the script stops, there also seems to be a problem with the homoerotic frat-paddle, which I solved by commenting out the line that looks for it.
I have noticed the script goes rogue occasionally, when it happens, I usually run the Bumcheek ascension script that day and it cleans up all the old quests for me and gets this script back in line.
This is a really ugly hack, but I solved the problem by opening;
.kolmafia/scripts/yaaz/quests/special/yz_chaeatu.ash <== I am a Linux user, if you are using Windows all I can say is it is there somewhere.
and commenting out lines 45-64 as such.
# if...