Burning Forest game glitch after completing the main story line?

I've completed the main story line, and have just taken on the Yogi and Reggie quest The Burning Forest. You run through a burning forest, chasing Yogi and Reggie to get your gear back, and eventually meet them on a roof top and then grab your gear from within that same building. I've done this four times now, and the mission does not complete. I get my gear and the forest stops burning, but the quest music continues and I can't leave the area without the quest failing and starting over. How do I get out of this quest? I've tried quitting and losing my current status, but when I reload the game I'm in this quest again. Help!