Just tested. It says the file is damaged and cannot be opened.
Can you try re-installing instead of updating? maybe some of the old files were still present and that created the error message
same. re-downloaded today and it still is saying the file is damaged and can't be opened.
I think this is happening for people that are not using the itch.io app. It is weird that the file works fine when you run it from the launcher but not when you extract the zip file manually. We are looking into it!
same here.