I have made a small change to the goal, it might have been confusing.
If this does not fix the issue, it could only be a bug as far as I can see.

@uglybird I took a screenshot which I put here if that helps. https://imgur.com/a/ZZ5aThO

But great tip about the script change to keep playing, thank you!!

Thanks for the nice review, re the 400 pop, it triggers fine for me but will have a look.
If you wish to continue playing after the WIN, open the "scn.xml" file and right at the bottom of the script change:
<action type="QuitGame" success="true"/> true to false.
Thanks again

I found the amount of ore on the map perfectly adequate. I won the challenge after barely hitting the iron age, so there was never a lack there. I still had un-mined tin and copper nodes when advancing to iron.

I did get credit for having a population of 400 when I only had about 358 people. I had never gone above 400, so not sure if that is set correctly.

I LOVED that I finally had a map with plenty of farmable area. No weird hills or bumps to throw off my perfect lines of trees and crops.

What made me saddest was when I completed all of the challenges, there was no option to continue playing. =( I had so many more crops to plant! To keep playing, just never buy out that last tech (for me it was netting).

Wonderful scenario, I highly recommend it to anyone who likes to farm and is tired of having to farm around hills, bumps, and lakes.

You must have made a lot of weapons and iron tools as I can count 15 iron mines which give you 15x15 iron + 15x315 iron in deep mining which totals 4950 iron, this only counting iron.
If you require more, you can always modify the environment "xml" files to get more mines.
Hope this will satisfy your desire for large populations

My dear, your maps are completely lacking in ore, I prefer a settlement with a population of about 1000 people.

Last minute update, just fixed the ending, all works well, have completed this scenario.
Enjoy it, it was a lot of fun for me.

Have made a couple of changes, increased the goal for grain from 4000 to 6000.
Have also adjusted raiders in late game, a bit more difficult.