I'm experiencing some troubles with worgen quest line. I've stucked at quest called "Take back what's ours". That's a part of main quest line and i can't finish it, 'cause as u may know u need to open a chest in a cabin and take mysterious artifact but there's nothing in it! I've tried many times yesterday and today. my guildmate said that he passed it successfully, but i can't figure out what's going on.