Maybe someone can answer this for me. When I installed the Windows installer package for Retrocade, I believe it installed TWO instances of the FTDI virtual COM port driver. The FTDI driver was likely installed before for other devices on my computer before installing the package. When I plug in the Papilio board, two COM ports show up, and the location field in the device manager days "on USB Serial Converter B" and "on USB Serial Converter A" > FTDIBUS\COMPORT&VID_0403&PID_6010 Is this supposed to happen? When I tried programming the Papilio with the one COM port nothing happened. Brian