I'm assuming you are also running the game from a Mac here. From what I've seen, un-setting "read only" only changes the properties of the files within the save folder, not the folder itself. I'm not sure how it works on a Mac, but on windows there's a security section when viewing a folders properties, and that is where you would provide full permissions for that folder I believe.
I’ve found another potential fix you can try. Go into your "System Preferences > Security & Privacy" settings and in the "General" tab, there's an option to “Allow apps downloaded from:” and you’ll want to select “Anywhere.”
You could also try downloading the latest Mac version of NW.js from
You must be registered to see the links
I’m not sure how to run it on Mac, but on Windows I just copied it into the game folder and replaced any similar files, then ran it from “nw.exe” and the game opened normally.
Also for the options menu crash, do you get an error message about a read-only file system? If so, that would point to a permissions issue again. Let me know if it gives you that error, and if any of these ideas fix it. There are some more complicated things I can try as well if these don’t work.