Like other people, I've been intermittently unable to save my campaign. I'm not really technologically literate (I just follow the instructions for installing the mod and pray) but I have noticed that when the advisor popup saying that the script has started goes away instantly, I'm able to save, but when it sticks around until I dismiss it, I'm not able to save. I love the mod, and hope this might help to track down the cause of the save bug. :ringwraith:
Sounds like there's a glitch with the script not loading properly all the time.