Okay, so "with friends like these" is the quest, and I got up to the door in falkreath, with the password from sigrid, "silence, my brother", but the option was never listed in the dialogue tree. I used the coc darkbrotherhoodsanctuary command figuring it would fix the door problem, but it completed the quest without altering the door. In other words, the door still expects to get the "silence, my brother" response, but it is never listed in the dialogue, and since the quest is finished, setstage doesn't work either. Any ideas on how I could fix this? Maybe swap the dark brotherhood door first variant with the regular one using the enable and disable commands? (Assuming I know the objectIDs, which i don't.) The culprit was a mod I had installed which was subsequently removed, but all my saves now have this issue because I didn't realize the problem until after all my saves were past the aforementioned quest. Any help to salvage this save would be appreciated.