cant save unit formation

If you assign someone to the formations V(Skirmisher), VI(Heavy Infantry), VII(Light Cavalry) and VIII(Heavy Cavalry) then the following issues occur: 1) On the world map, hovering over your own character will show "ERROR: Text with id str_troop_type_name doesn't exist!" 2) Reloading the save...

When You click and go in party view to manage Your troops. Manually assigned troop formations do not save. ( Its saves while You are playing but once You load game all the previous assigned formations/groups of units are reverted back to default which is infantry group one). And even default...