I'm encountering the same error I was a while ago.
Your profile can not be used because it is from a newer version of NW.js.
Some features may be unavailable. Please specify a different profile directory or use a newer version of NW.js.
I found the old comment, followed the steps, removed the nwjs folder, and web-journal and other, and I still get a black screen when trying to enter. What am I doing wrong?
Like is there a way to update it?
Edit: I have other indie games that also use NW.js, and give the same error, but still work no issues.