Forum:The Final piece glitch(major help please)

The mission a final piece I killed Baron and went to the white chest turned in the mission. I guess I accidently exited the next mission finding some answers. Now I cant start it I saved restared killed baron again I went to the chest and it says use and I click it and nothing... I then cant even leave Barons place without saving so I check my missions it says in done with final piece not finding some answers but it says I havent started finding some answers. So am I screwed with finishing the next plot mission? Can I start this online with someone? Am I missing something, I sure hope so I really hate to do this again