I THINK I KNOW WHAT IT MEANS!!!!!!
It has to do with how many elements all the units add up to. Each Division can only have 18 elements, if you go over that amount you get that damn error.
I have just been putting Random units as place holders until I finished everything else up. After getting that same error on 3 divisions now I started deleting the bottom Bde and work my way up and noticed after a couple getting deleted the error went away. Going to try and put the correct units in now and see what happens
Yup, that was it....talk about a frustrating little error on my behalf
Ok, now that I got all the kinks worked out let me finish this damn thing up, lol