Post: #13

Ok I had a quick look at it and right away I noticed something not right.

ON=@Destroy
REF1=<UID>
FORCHARS 30
FOR x 1 <QVAL (<REF1.TAG0.PONTE2.Q> < <REF1.TAG0.QUANT>) ? <REF1.TAG.QUANT> : <REF1.TAG.PONTE2.Q>>
IF (<UID>==<REF1.TAG0.NPCL.<dLOCAL.X>>)
REMOVE <-------------------------------------NEVER DO INSIDE AN @DESTROY TRIGGER
ENDIF
ENDFOR
ENDFOR
FORCLIENTS 18
UPDATE
ENDFOR
REF2=<TAG.Boss_Respawn>
IF (<REF2>)
REF2.TAG.TOTAL --
ENDIF

I'm 99.99% sure that this is the probem.
You are removing the item just before it's removed... so when sphere deletes the item, it's accessing memory that is no longer allocated to this item.
Maybe it would be solved if you RETURN 1 so that it prevents the default destroy process.