One last word, if I may.

My primary concern at this point is the inability to see the pieces of the added factions. CTD each time a new faction piece becomes visible. Please help?

I have added the Scots, the Welsh and the Vikings.

Whenever the Viking or Welsh pieces come into view, the game CTD. I had this problem with the Scots, but I just started copying and pasting files until I got lucky. It seems that this has something to do with the /pieces (I think it's in the textures sub). But I have no more files to copy/paste, so I don't understand why the game CTD when the Viking or Welsh pieces come into view.