Yes it creates a file in the root of the project to show its been accepted. It seems like new files cant be created to the root of the project. I left the save plugin parameters at defaults where it creates a save file in the user data folder in the root project. I am at work but i can send a screenshot when I get home tonight.
A fix for the user agreement file is changing the code a bit, where it should look up the base folder of the game's executable, instead of the base folder. For example, to return the folder for saving that file, it could be like this:
return path.join(path.dirname(base), "UserConfig");
base (in this case) would be the executable (usually found with something like
var path = require('path');
var base = path.dirname(process.mainModule.filename);
Send me a screenshot, when you are able to.