[johnau]

I had a very similar problem. Try inserting your USB cable into one of the other ports that are labeled input. Aurender advises me they all provide output regardless of how they are labeled. It worked for me as a temporary fix.

The actual problem was due to a feature that was made available in a certain OS upgrade. I believe it had to do with streaming from Spotify to the aurender, but I’m not positive. I had enabled that feature, but it was buggy and aurender subsequently removed the option from the user interface in another OS update, but they left the buggy code in place. Aurender support was able to remotely access my server and fully disable that feature, and I have not had any problems since.

Best of luck!