Instrument for Volca

after a long time I pulled out the volca keys and connected via Renoise. I created a simple doofer to control the hardware. Everything was fine so I created an instrument. I restarted Renoise and load the instrument. It worked. But now he doesn’t always react to change. where is the mistake? Some idea ?

Volca Keys.xrni (3.4 KB)

I found solution.
When i create new song i must swap output device to another and back.
Maybe behringer error.