hi there! I've got my first mac, and trying to install windows 8. i didn't have the option of transferring the iso file to usb, so i deleted 3 letters from the "info.plist" as it was said in youtube( the letters were: pre). the option of transferring the iso file appeared but after starting the following message was shown: an error occurred while copying the windows installation files. after that , i tried to retrieve the file i changed, but now bootcamp is not even opening...