So after finding esbern in the ratway and convincing him to go to Delphine, the Cornered Rat quest finished but the followup quest Alduin's Wall just won't start. Esbern returns to cooking and no further quest journal updates are made. Neither talking to him nor returning to Delphine and talking to her gives any dialogue options that help.

I tried setstage commands to force start verious stages of alduin's wall as well as reseting cornered rat. Resetting the latter only moved the quest back to the unfinished quests, but all three objectives are still marked as finished, and esbern acts the way he did before the quest when his door is locked. Trying to force start alduins wall with the console simply doesnt do anything at all, the quest still wont start and still no reactions from esbern.

Does anyone know anything about this i tried googling this glitch but i found only two unanswered posts about it on other forums and the Wikis don't even mention it.

Help is greatly appreciated. It would be very sad to have this gamebreaker in the middle of the game with a level 30+ character.