I've fixed several bugs and put all the files in 2.3 patch.7z file. Try downloading it, unpacking it, and put its contents into the 'eras\data' folder (default location 'C:\Program Files\SEGA\Medieval II Total War\eras\data') and see if this fixes the problem.

http://www.twcenter.net/forums/showt...51#post2641851

If this doesn't fix the problem I'll need a copy of your save file.