If your joints are X-0, Y-1, Z-2, and X2-3, in the TRAJ section there should be a line
COORDINATES = XYZA
(or something like that). This designates the axis letters that are displayed. There can be no duplicate letters on this line. Change it to:
COORDINATES = XYZ
This is the post I referred to in the other thread. It works with duplicates. I have COORDINATES = XYYZ. But I think it also works with XYZ.
