Double-check the instructions  and try again. No "are you sure you want to overwrite" warning probably means you're putting it in the wrong location, as GT comes with a copy of it with default values. It goes in www\js\plugins in the game folder.To clarify, the folder path the file gets WRITTEN to and the place you need to MOVE it to are different. It shows up in the www folder of 1, but you need to move it to www\js\plugins in GT.