I can only assume now that I have a defective interface.

This interface works and doesn't crap out my Win7x64 recording environment.

This is a great small/portable MIDI interface

Love this interface.

The perfect interface for working on Johannus organs with their MIDI based Intonant software

interface works fine

The cheaper USB midi interfaces often don't properly send SYSEX messages to properly set up and control those older sound modules and synthesizers.