I encountered something similar. In my case, I checked my mission logs and had the mission "Chapter XVI: The Battle of Odessen". I've finished that content but took a quest to redo it for some reason. Anyway, I found that nothing would start "Old Wounds" until I took the first step of Battle of Odessen. Once I did that, I left for the surface of my base, reset Old Wounds, and then it behaved normally. The first cut-scene you get should not have your character. There will be a bit of action, then dialogue, then you'll get to go talk to Doc Ogg (at least that was my experience). GL!