Canon Tower Bug

Hi I havent been building cannon towers in any of my campaigns and am worried i might get into a battle when i will actually feel its loss.

i know there is a mod to fix it but my query is does this mod ONLY modify the towers?

also can this be done by simply modifying a few lines if so i can do it myself

i dont want any other changes done except maybe the 2h mod but i dont have nay 2h units so not worried about that too much.

i am playing 1.1 with no mods right now.

thanks for any replies and apologies if its been asked/answered before. i'm at work and cant spend too much time browsing.

Yes there is a fix, at the Total War Center.

Id give it to you myself, but it doesnt work for me..