Contents->Resources->GameData FR->FONTS->Open the file Fonts2.xml
You have the folder open (usually Applications) and you see the AOE 3 icon.
Right click icon and select 'show package contents'
Another finder window will open, with a folder in it, called contents. Double click this.
Now double click the 'resources' folder
Then double click the 'Gamedata' folder
Double click the 'FONTS' folder
right click on fonts2.xml
Open with. Then select, 'Other'
Scroll down the programs till you see 'Textedit' and click on it.
Now click Open
Edit the file as directed
Do as follows:
Change the first line of this file as follows:
<?xml version = "1.0" encoding = "UTF-8"?>
and save it.