The event chain for Second Spear Nayrim in Desert Highlands appears to be bugged. I waited over an hour around Makali Outpost and it did not trigger. After joining a party in LFG also seeking this event chain, I checked out a group event to Assault the Mordant Crescent at the camp. This is bugged; you can't speak to the NPC to start it, and the Champion baddie is marked friendly and just patrols around.
I am wondering if there is a link between the two. Since the Nayrim events start with the Mordant Crescent assaulting Makali Outpost, and this event is stuck, perhaps that is why the event chain is stalled out.
A fix would be awesome; this is the last thing I need for the Open Skies: Desert Highlands achievement for Zaklem: Rune of Loyalty.