Well, I have 5 minutes of experiance with AIs, but...
Are you sure the player is able to build a bombard tower? The computer must have Chemistry and Bombard Tower researched, and it must be a civ that can build them in the first place, as well as having enough resources to do it. Also, (less likely) it may not be able to find a suitable place for one.
Not sure about the Town Center deal... Again, make sure the player has enough resources, make doubly sure it actually has 0 Town centers remaining, and make sure it can find a good place for one. Keep in mind Town Centers are one of the largest buildings, and they cannot be placed on elevation.
zyxomma100-
Age of Kings Heaven forumer
Proudly thwarting Dark_Aro's evil plans since 2002
"There is nothing more sad than watching a teutonic knight chasing a petard."