@Veteraan
Glad it was an easy fix and not another oops on my part.
I plan on releasing another bug fix; tonight I hope.
This will fix the invisible forts and correct some errors in Rohan's building appearances.
It will be save game compatible, I just need to get to the files and create an installer.
@paradamed
This is an attempt to reduce stack spam by the AI.
It seems to be fairly effective in my current campaign.
Adjustments will be made if required.
Since the AI has virtually unlimited funds (they are capped per turn, but can always pay for upkeep) and will not go into negative values for its wealth, another method had to be devised to slow down the production of units while not hindering building and other construction.