Might I suggest updating the usb driver? not sure if this would help.

Possible that laps free is so free, that the support for the newest decoder is not compatible with your laptop usb drivers.. the laptop should see the device name as "AMB Decoder"

I hate to suggest this, but it is possible that Doug might help you [email protected]. I use his software, and have had no trouble.
If you would like to PM me I can look at my settings in my laptop and software and see if there is a solution there. www.rcscoringpro.com. or maybe I can find the exact .inf file to install, maybe?

thanks,
Pete