I'll bet it's a random event that's firing, looking for something specific, not finding it and crashing the game. Could you post the savegame somewhere so I can take a look?
I might be able to either fix the save, or give you a solution.

*Possible Bug*
In my current games, i have found that i am unable to bombard the cultural defense of an enemy city if i am still inside my own territory. This has happened twice so far, each time the problem is solved by moving inside the enemy territory.
On an unrelated note, are you going to post the source for 0.83 soon? I want to try merging some stuff into it for my own pleasure.
My game is crashing (using this mod) at the same place each time.
Load up the save game as Japan, and use the grenadier just north of the barbarian city of Vandal to attack the city. The game crashes at that point for me. Any ideas on how to fix this?
I know you haven't added all my custom movies and diplomacy music because of the 10MB limitation on CFC's database, but there's no extra hassle if you just upload your work to FileFront or MegaUpload or one of the other FREE servers, and you simply link the CFC Download link to your upload host... just the same as I do for the Wolfshanze Mod... there's a box in your CFC Download link (when you edit it) to link to an outside site instead of using the CFC database... it will allow you to keep the music and soundtracks and you won't have to worry about a 10MB limit.Please, Ninja2, add the music and sounds in addition to the graphics when you update the mod.