Can you record MIDI from the Virus to Cubase or whatever you use? If you can, then that's a start because it's essentially doing the same thing as it would do in Soundiver i.e. transmitting data, which would lead me to the conclusion that it's the software:
Make sure the device ID is set to 1 in both the Virus and the software.
Make sure it's coming through the correct midi port in the software, (best use the one you use for your sequencing software).
Are you having problems with both transmitting and receiving?
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