GS Crash with Manashield

I found a bug in Muserver 0.97D.

A DW found mana shield scroll and uses, then the gameserver closes. Because manashield is only for SM!

How can I fix it?

sorry my bad english

Att,
Neto

Edit Data\Local\items.txt, maybe settings on that scroll are on DW, make sure the code numbers on the end of the item are right :):

Skill
Soulbarrier DK/SM = 1
Should be "0"?

I was reading that manashield can also be used by the dark wizard, then Why GS closes when a player use the MS?