Found an issue with Vladilena Milizé, the game crashes when discovering the character é in her BK.ini file (even in comment lines)
But it might be a different issue than the one you're describing, because this error is right at startup, not when loading a save.
Edit: Don't know what I'm doing differently, but now the game is launching but I get an error when saving - so I'm guessing it is the same issue
Edit2: Ok, the Vladilena Milizé pack's _BK.ini file is saved in ANSI encoding and that causes a problem. Opening it in notepad and save-as UTF-8 should fix that (but still unclear if it's the same problem you're reporting)