Within your ai (petra) javascript code you have on line 140 a typeError, saying
 
 
	I'm using the latest 0 A.D. version (Ken Wood, bless him) for Linux [Mint]..  
 
	See attachment for more info.  
 
	For some reason the key and i variable combination results in a non-existing object from this 2d array.  
 
	Kind regards,  
 
	Melroy van den Berg