Sorry for the stupid question, but how can i add a new building chain to the game?
In og Rome Total War it was super easy, and no, i don't need that the buildings appearing on the battlefield. I want only a some extra buildings.
What i tryed until now, is that i only edited the descr_buildings file, i wanted a mercenary post for BI.
Here is what i added to the file:


building alliesfield
{
classification military
icon infantry
levels fieldone fieldtwo
{
fieldone requires factions { barbarian, hun, nomad, roman, eastern, carthaginian, }
{
capability
{
happiness_bonus bonus 1
}
construction 2
cost 800
settlement_min large_town
upgrades
{
fieldtwo
}
}
fieldtwo requires factions { barbarian, hun, nomad, }
{
capability
{
happiness_bonus bonus 2
religious_belief pagan 2
}
construction 3
cost 1600
settlement_min city
upgrades
{
}
}
}
plugins
{
}
}


Everytime i start the game with BI, i get a error message about an data base error, but the game crashes without showing me a specific position in the lines and rows and i have no clue what do to now.
I tryed to find something helpful online, but i didn't found anything what could help me.