I added a warning to the description about GMS2.3. I'm looking into updating the tool to work with the new format. The new project format is quite different so it may take a while.
No problem.Take your time.We'll go the good ol' way in the mean time :D
If you get it working with 2.3 that would be amazing. I use this all the time on my projects. Thank you for any future effort you put into it.