1) There's nothing called a "booter." Please be specific and use the same terms as the manual so we have some clue what you're talking about. Do you mean the bootloader is giving an error message when you boot up, or is ipodpatcher giving an error message?
2) There's no mention of a "root file" in the manual. It specifically says to the root of the device. This means directly to the device, not in any folders.
If you're getting error messages, we require that you tell us the specific error message so that we actually know what's happening. We're not psychic.