LAN multiplayer problem

[Rundown]

OK so my problem is playing multiplayer on LAN with two people (just me and my brother). This problem has occurred two times already and we do not know how it happens or how to fix it.

Usually about mid way through the industrial age the game will crash, giving us a message saying that the game is out of sync and you to need to reload the resynch save. However, whenever we reload the resync save the same thing happens again and it says the game is out sync and you need to reload the resync save. We have also tried reloading an earlier save in the game but still the problem occurs. It always happens at the same turn too. We have also tried playing with the preserve random seed option off but this still does not fix the issue.

Has anyone else experienced this problem or have any idea of how to prevent or fix it?

BTW we are using c3c.

Thanks

 

[Puppeteer]

I have no experience with LAN multiplayer, but if it is happening on the same turn I might check to see if anything new is happening on that turn, like a new tech, a new wonder or building finished or a first unit built, and perhaps the graphics file for that new item is corrupt on one computer or the other. Or perhaps contact with a new AI civ?

 

[Rundown]

Nothing really exciting happened that turn. We tried replaying the save and each not doing anything. That means that no wonders were completed, we did not move any units, etc. But still to no avail and the crash still occurred. We were in contact with all ais at that point as well. Middle of industrial age. I think latest technology I had gotten was replaceable parts and I was working on steel or corporation.