Ok the 'epoching' system has been fixed however there are a few concerns.
Because you haven't used a template but went straight into scenario editor. (or you used a space-age template.) the following things do not work properly unless you fix them with triggers. (which is more work than remaking the whole map itself.)
you cannot upgrade economic bonusses, hero bonusses, tower upgrades etc until space age.
I'm not sure if this goes for the capitol only but possibilities are that;
barracks units cannot upgrade until space age.
hospitals cannot upgrade their tech until space age.
temples, universities, basically anything with upgrades might struggle until space age.
You can fix it with triggers. (if you open the .scn file and go to the trigger button which should be near the units button in the left bottom corner of your screen.)
You should be able to see which triggers i've put in which basically are;
If player 1 is prehistoric; effect: allow stone epoch technology.
if player 1 is stone; effect: allow copper epoch technology. etc etc etc.
I think it's possible to add a few effects like 'if player 1 is stone age; effect: allow the stone mining upgrade.
BUT, this has to be done for every epoch correctly. which will cost a lot of time.
Also another question, what is the point of this map?
to reach an iron mine you'd have to cut through 100 trees all containing 500 wood? your scenario name 'battle of TIME' really applies here haha.
attachment uploaded to this post.