I have the exact same issue. I end up at the chopping block (first one there, before this patch someone else lost their head first) and everyone looking at the guy that said "let's just get this over with" "Alright then" and nothing. All the npc's just stand around. I let it run for an hour and night time approaching, shadows lengthening and nothing. I started deactivating my mods. Sounds like that is not the answer. And I also can go with an old save, no problems. Any suggestions? Anyone?