xcelorin esc problem

[zoaman]

hi there i am looking for some help. i have a xcelorin 6.5t combo. i have been connecting it to the laptop to make some setup changes and it has worked fine .then i replugged it in and now it wont read the esc. green light is on for usb and on the data link lead is also green.the esc light on the software is red. i have unplugged the esc from the receiver and tried it in the car and all works fine.so nothing wrong with the leads ect.just wont connect(read) the esc. have uninstalled and reinstalled but still the same. windows box comes up with read error 4????