Hi, Chad
Try this, It could be In Config, Motor Tuning the Pulse Width set to low, Step, Dir Pulse's, If there set to 0 set them to 5,
If that fixes it, back them down till problem is back, then set it backup 1 level. ( time that the Opto's have to see Mach Pulse's), it may
change from screen to screen not sure.
If it's ver. Mach32.0.049 re-download it, may have the giters.
Hope this Helps, Chip