I also encountered that problem and I found a solution. You have to stick close to the main quest line, like for example if your quest is at Ettinmare you only quest either side or faction quest near that area. Don't go wondering around Sidhe, cause if you meet Nyralim before getting the "Hunters Hunted Quest" it will cause the bug. Your suppose to meet "Alyn Shir" at "House Of Ballad" if your map doesn't show "Her" being there after finishing "Dellach" then you might get bug quest.
Hope this helps you
Note:
Haven't tried doing the quest using cheathappens trainer.
Using PC version
tried both doesnt workie
i'll wait for the patch as I don't want to lose 181 hrs of gameplay and all the completed dlc and side quests
From reading posts on the official forum, there's not going to be a patch any time soon. Basically, the lead dev says he wants to get it right the first time, rather than patching, then have to patch more stuff, etc etc.
Doing that means they need extensive testing, which they basically can't afford and can't get from EA. So they refuse to patch until they can do it right.
Personally, and selfishly, I'd be happy to have to patch the game a few times if it means I can play the damn thing without having to give up 45 hours of gameplay and start again.
EDIT:
Actually, it looks like things have moved along a bit since I last checked on the forum.
"We should have news regarding the first patch very soon, what platforms, what it will contain etc., and fwiw we sincerely appreciate that you guys care this much about our game, and us."
That was posted a couple of days ago, so by their current schedule, we should hear something in about a month or so.
[Edited by Skyheart, 4/27/2012 4:51:42 PM]