itch.io

Hi, I have downloaded the desktop app and the windows mac linux version on there. 

However, this error pops up when I try to load a saved file:

[code]
I'm sorry, but an uncaught exception occurred.

While running game code:
  File "renpy/common/00action_file.rpy", line 452, in __call__
    renpy.load(fn)
Exception: Couldn't find a place to stop rolling back. Perhaps the script changed in an incompatible way?

There was also a full traceback that also could not find a place to stop rolling back

What could be the issue?

ooo! The first CG! Looking forward to seeing it in game :) Also this is the first time I've really followed a development of a game... Do I have to restart all routes every time I download a new version? Or is there a way to preserve what I've already done in previous updates? Sorry if this is a silly question. :')