I started experiencing "ErrorBuffer" messages at the start of running some jobs. This happens about 5 or 10% of the time.

Attached is a screen-capture image showing the nine register values from a recent session.

This happens with my MK3 controller using CNC USB Controller V2.10.1807.2601 (old version).

Is this problem caused by my PC, the control software, the MK3 controller, or some combination of the three?

Thank you for your assistance.