Medieval II Total War has encountered an unspecified error and will now exit

[Mr.Fable]

Yes, this again. I don't understand why it's happening. I'm playing an early campaign as the Kingdom of France. The game had been very smooth until now. I can't get past this one specific battle that I'm having with the Fatimids near Cairo. The battle will start off fine but after a few minutes I'll get the above error. There is an allied Crusader States army helping me in the battle. Could that possibly be the problem? Because that's the only difference between this battle and the countless ones I've had in the past.

[Andytheplatypus]

Its a common problem when armies join the battle after its started. Download germanicus battle ai fix. Either that or there are too many units on the screen.

[Losthief]

Yes, this again. I don't understand why it's happening. I'm playing an early campaign as the Kingdom of France. The game had been very smooth until now. I can't get past this one specific battle that I'm having with the Fatimids near Cairo. The battle will start off fine but after a few minutes I'll get the above error. There is an allied Crusader States army helping me in the battle. Could that possibly be the problem? Because that's the only difference between this battle and the countless ones I've had in the past.

wait till the allied army reinforcements are completely on the battle map before you engage/attack your enemy. That might fix it. Also the battle ai submod will help.