I am running BDI 4.38 with Jon's PPMC cards and a Bostomatic mill. Today running a Meshcam file to do some engraving in wood the EMC would just stop like it was paused. The spindle didn't stop it just stopped progressing through the file. I tried "resume" and nothing happened but when I tried "step" it would proceed on and then "resume" would work. This happened many times over several hours. Sometimes only a few (5 or less) min. between events other times like 20 min. The machine reported NO errors when this would happen, and the comand it had just executed and was about to execute were normal moves line G1s. sometimes single axis other times multiple axis (no stops or pauses) Yesterday ran a similar (but different) file for hours with NO problems or stops. Feed rate was higer today. Any ideas? Thanks, Beau