AoO in Fragrach&Scather-Game Freeze Problem

[sparhawk_tr]

Elmo is my NPC and i have the Humble NPC mod. It is enable me to improve my NPC myself.
So i gave him the Exotic Weapon Proficiency -Bastard Sword- (Weapon Spec. and Weapon Focus as well) feat. Now he is duel-wield both Fragrach and Scather.
The last feat that i gave him Exotic Weapon Proficiency -Bastard Sword- . And I'm in Fire Node. When i tried to fight with Salamanders game freezes. Animations keep going but none of the characters can move or take action. One of the fight rolls history says:

"Elmo hits Salamander!
Elmo makes Attack of Opportunity on Salamander
Elmo makes Attack of Opportunity on Salamander
Elmo takes 1 points of fire damage
Salamander takes 11 points of Slashing damage
Elmo criticaly hits Salamander
Salamander takes 20 points of Slashing damage"

And then nothing happens. It's still turn of Elmo and he has right to move but he can do nothing. Neither can i. Because none of the buttons in keyboard is functioning. Only thing i can do is alt+F4 and shutdown the game. I have tried different things like single weapon with one of Fragrach or Scather.
The problem began with exotic weapon proficiency.

Do you have any idea to solve this.
Is this a bug?
Thank you for being patient and read all of the thread.

[Lord Plothos]

There is a conflict between fiery guys who damage you when you attack them and scather/fragarach. At present there is no way around this besides using other weapons. The only enemies that cause this problem are the flamebrothers, salamanders, and the Balor guardian.