Thanks BlueGenie, that works for me! 
I set Max Units Per Tile to 0, and it works
However, do you think is possible safely use this feature? I like it, I hate massive stacks of units walking through the map and attacking every city, there is no defence!!

I set Max Units Per Tile to 0, and it works
However, do you think is possible safely use this feature? I like it, I hate massive stacks of units walking through the map and attacking every city, there is no defence!!
