I have the Rio Car MK2a model... the serial synch works fine with Emplode in XP... but the USB does not. It has an error on the initialization step. After that, emplode says the device has been disconnected even though it shows it is still there in device manager. I am using the updated USB driver that comes with the latest version of emplode found on the Empeg website. Any ideas on how to fix this problem? Thanks!