Hi, Inivator

It could be a number of things, Acceleration set a little to high, If there are any G00 moves Velocity to high, Power Supply volts or amp's not sufficient, Current on your stepper board set low.

Tell us about your setup.

Thanks, Chip

NOTHING IN THE SET-UP HAS CHANGED.  THE POWER SUPPLY AND BOARDS ARE THE SAME SINCE DAY ONE.  THE ONLY CHANGE THAT I HAVE MADE IS TUNING OF THE MOTORS.  ALL ARE TUNED TO ABOUT THE SAME SPEED AND ACCELERATION.  I HAVE SET THE LOOK-UP TO 200, IT WAS 2.  I HAVE NOT RUN THE MACHINE SINCE THE LOOK-AHEAD WAS CHANGED.  I HOPE THIS WILL HELP THE PROBLEM..

INIVATOR

Hi, Inivator

Have you done these short segment type files in the past.?

Is Mach setup in CV or Exact Stop mode in Config, General Config.?

A Look Ahead of 200 is big and probably won't help if your in Exact Stop mode.

Chip

IT IS IN THE CV MODE.....................

INIVATOR

Turn your acell down a bit and try again.
Hood

I'LL TRY THAT...THANKS.  I WON'T BE DOING ANYTHING ELSE TODAY, THE BOSS-LADY SAYS IT IS HONEY-DO TIME.

AGAIN THANKS
INIVATOR