I get that problem about the Path of War tags all the time. In order to fix it, I move the following lines out of COM_3PPPack_PathOfWarEx - Tags.1st:
And copy them into COM_3PPPack_PathOfWar - Tags.1st. (note the absence of Ex) I don't know why this works, but I know it does.
Code:
<!--The DarkFocus tag group is used to denote disciplines that have been selected by the Harbinger's Dark Focus ability-->
<group id="DarkFocus" name="Dark Focus Disc."
inherit="Discipline">
</group>
<!--PoWFreeMan indicates that maneuvers from the tagged discipline can be readied without counting against the normal maneuver count (such as with the Harbinger capstone ability)-->
<group id="PoWFreeMan" name="Free Maneuvers"
inherit="Discipline">
</group>
And copy them into COM_3PPPack_PathOfWar - Tags.1st. (note the absence of Ex) I don't know why this works, but I know it does.