You are following the instructions right??? Nothing ever said .CPP, or to delete anything... You should probably ask some other people if this doesnt work:
Here's a link to the code: http://pastebin.com/A39ADjkk
Click the link and highlight the code you see. Right click it and then click copy. I think you're using Windows??? If so, right click inside the file where you have TPT. Click "New" then click "New Document." Name it "autorun.lua". Right click it and click "Open with..." then click "Notepad". When it opens, right click and then click "Paste". Save it then close the window. Open TPT and it will work. (That's how to do it without Cracker's manager, which seems best for right now)
Lol