yep, dunno how to fix it, only tried to connect it once. I was using a Vista laptop with a usb to serial adaptop and my engine was switched off. Will try it with the engine on next time. Also I have an old win 98 laptop with serial port so may try that.
I've read that is is due to using the usb port and it resetting after 20 secs. Im no computor wise so dont know if thats right or not. I have a serial port on my laptop just no 3 pin on the car!
If you right-click on the icon/shortcut that you might have on the desktop (or in the programs menu) then you should be able to select the "compatibility mode" within the properties. Try setting it to Win95 or Win98 and see if that helps.