Nikras

Doing the quest chain "A Dark Threat Looms" On the last part when i defused the keg and accepted the popup quest to return for the final reward i got a message in chat that I wasn't eligible for the quest for some reason. It won't let me click back onto the barrel because I already completed the previous quest. The part of the quest I had just completed is THIS one. The part that failed to start was THIS one. Screeny Anything I can do to get the quest to activate? I want that dagger s'bad.