Could you please look up the content in the end part of page 53's posts, I got a question and I believe that site supporter didn't answer me.
i think nobody understands you, the trainer got updated to maybe fix something or add/remove something. just use the latest version or don't thats your call. not always does the game version have to change for example a hotfix.
I had this issue. I turned off god mode and massive damage, then reloaded the quest. After speaking to the problematic NPC, I would then turn the options back on. Seemed to fix it for me.