So I'm in the middle of the main Thieves Guild quest (my favorite one), I'm supposed to meet Karliah and Brynjolf in Irkngthand, to stop Mercer Frey, however. I cannot fast travel there - when I do the loading screen just never ends (I left it for 40 minutes once). So no big deal I thought, I'll just get close to there, and walk in, but when I do, the game freezes as soon as I get close.
I have NO mods installed - I don't even know how mods work, so it isn't that, and my game is completely up to date.
Any help?