Well, the title is probably not too clear so I'll explain: Whenever I am in a cell where there are (alive) vampire NPCs, if I save in that cell and exit the game, I invariably get a CTD.

It also happen when my character is a vampire, in which case the game will crash upon exiting whatever the cell I'm in.

The various vampire scripts seem to be the issue, but I don't have any mods running.

So, it is not really a game-breaking issue, not even a fun-breaking one, but I'm curious to know why this happens, and if it also happens to other players.