trying to use a race tuner on a 04 FLSTC, bike has pipes and a highflow. when i hit program ecm, it gets about 25% and stops with a message unable to load bootloader. i tried and older verision of se software and had the same results any ideas would be greatly appreciated. i'm using a laptop with windows vista and a usb to serial adapter, i can read vin when i click get info. i've tried the latest version "L" and then "G".