If you encounter errors with a game, you should ask about it in the game thread. People familiar with the game are likely to know of solutions.
You don't appear to be using the latest version of
that game [v0.59]. Try updating to the current version to see if it's been fixed.
Failing that, the important part of your error message is:
NameError: The variable strip_switch does not exist.
Which means the
strip_switch
variable hasn't been declared/initialised properly.
Simply searching the game thread for
strip_switch
would lead you to a
work-around.
You'd need to
enable the console to apply it.