I'm sorry, but an uncaught exception occurred.
While running game code:
File "renpy/common/00start.rpy", line 273, in script
python:
File "renpy/common/00start.rpy", line 273, in script
python:
File "renpy/common/00start.rpy", line 277, in <module>
renpy.call_in_new_context("_main_menu")
File "renpy/common/00action_file.rpy", line 462, in __call__
renpy.load(fn)
Exception: Couldn't find a place to stop rolling back. Perhaps the script changed in an incompatible way?