Hey all! I've received the following error report through forms:
For the benefit of those who don't read the changelog notes:
This is known error when using an old save. You must start a new save or you will encounter this error. It's a result of old Twine variables and new Twine variables not matching up. The only fix for it is making sure to start a new save. Before I released the public update, I tested it myself on an old save and on a new save and confirmed that this does not happen on new saves. If you are on a new save and it still happens for you, you may need to clear cookies in your browser to make sure it isn't saving outdated information. Beware, however, that this will erase saves from any Twine or Dashingdon games that you play!
As a general rule of thumb, if you encounter any strange errors when playing a new update, it helps me out a lot if you make sure the error can be replicated (or not) on a brand new game.
I know having to play a new save every single time there is an update can be a pain, but sometimes there is no way around it during development of a Twine game. Generally, if I know for sure that old saves will cause problems, I will let you know in the changelog, so make sure to check it before you play to save yourselves some time!
Thanks to the individual who made the report!