I encountered the problem when A Cornered Rat quest doesn't start at all and because it wasn't possible to start it with a console I followed the instructions on uesp.net to continue to Alduins Wall quest. This far it worked right but now I returned to Sky Haven Temple and I found out that I can't enter in dialogue with Esbern to receive his quests and to get his help with locating the Elder Scroll. He just says to me "Go away", "I'm very dangerous, don't force me to come out and hurt you", "I'm not opening the door" etc. I have tried as many commands on console to solve this as I have figured out or have found on uesp.net but nothing seems to work. If anyone knows or have an idea how to make the dialogue to work properly please tell me?