No cedrus device detected

Hello, all

I am having psychopy windows8 & mac os sierra.
I would like to derive a pulse through stimulation tracker and get a voice response through cedrus SV-1. In doing so, I expect that I can see both devices.

I am able to import pyxid - that was released 5 months ago. In both system, no cedrus devices detected. Outputs from python interpreter is like this.
Is there any one solving this problem?

devices = pyxid.get_xid_devices()
devices
[]

Thank you for reading.

Were you ever able to resolve this problem?