Yesterday I was about to have that fateful combat with Zio (the first time) when it I had a fatal script error concerning some weapons. I should have taken a screenshot. Thank god you put a save/heal point before Juza.
EDIT: This probably occured because I unequipped Chaz of everything.
EDIT2: I noticed Vol deals good damage to Zio despite his magic barriers, but that's pretty cool, don't know if you intended it. Absolute damage, I guess you could call it.
EDIT3: I don't know how to get past the second area of quicksand that separates me from the Ladea Tower at the 'Eastern Peninsula'
EDIT4: Oh wow, I had to teleport to Termi to get there... I'd probably be stuck if I didn't have a second teleport stone? No wait. Teleporting to Termi doesn't consume one, but teleporting back does.
EDIT5: I dig the Ladea Tower music. Really, bleeding awesome. Also, you forgot to disable saving in that place.