I am about to complete my second run through of the game and I am at that part in the First Garden where there are 6 Death Knights attempting to prevent us from fighting the Void Dragon.

The Death Knight Control Wand was placed in my inventory after the Soul Forge took place. I equipped said wand but when I go to use it the Knights remain invulnerable. I attempted to hit the same knight several times in a row but he remains invulnerable. I tried reloading several times but the same thing happens.

I then tried first casting the spell that makes them vulnerable and then use the wand but I am hardly touching them; very little damage at at all.

Is this a known issue or am I missing something? I did not have this problem when I did my first run through.

Thanks.