Well, I'm not saying that. I'm just saying, like for example, the 6.1 "menu fix" really broke just about every script, not just PnP. I'm assuming (since the
versions.txt mentions hash table changes) that this could be a similar thing. Of course if you make something that is designed ONLY to work with 6.03 then it should only work with 6.03, but to my knowledge, most scripts are designed to work with 6.03 "and up."
But if it were made for x.xx why would you use x.xy? Because old versions have bugs, new versions have new features, etc.