Thank you for your responses. It is a standalone setup and I did check the settings under Performance and it is set to 1. My setup is fairly simple with my TD50 being connected via USB to my Mac. The Mac is then connected to a Berringer XR18 via USB and a USB hub. This has been my setup for many years now with no problems. Just as a shot in the dark, while playing a gig this last Saturday I first replaced the USB chord from the TD50 to the Mac, and the error continued. I then removed the USB hub and plugged the Mac directly into the Berringer and the error still occurred. This all happened during our 1st set. Before the 2nd set, I replaced the USB cable leading from the Mac to the Berringer and there were no more errors the rest of the night. So I’m cautiously optimistic that my problem was a bad chord. Time will tell. If the error continues I’ll reach out again. Thanks again for your help
