I am Vigil, 55 lvl Undead Warlock. I would like to report a bugged quest: Kroshius' Infernal Core.

The remains of the infernal are there, but the Fel Fire quest item cannot be used on them and the quest is undoable because of this. It would be much appreciated if someone could look into it, for the Infernal spell is very important for Warlocks.

Thank you in advance.