Get rid of this: (Edit: 162-165)
Code:
<!-- utility: if targetting a monster, but casting a spell that can not be cast on monsters, then cast on self (buffs). -->
<if SpellTargetType="MONSTER" NotValidTarget="*Enemy*" ValidTarget="*Self*">
<changetarget target="<me>" />
</if>
and you won't have problems with <st>. You won't be able to target a cure on a monster and have it hit yourself either, but as nifty as this is, I attempt to cure-nuke undead more than I accidentally cure mobs, and removed it long ago.
Further Edit: No idea, Khamsin, maybe try windower irc or forums.