Sorry for any confusion, Isiledil, I'll try to make myself clearer 
Look for any traits like this one from DLV:
Code:
Trigger Squire_to_Knight_Trigger_Battle01
WhenToTest PostBattle
Condition IsGeneral
and WasAttacker
and WonBattle
and BattleSuccess = crushing
and I_ConflictType Normal
and not CultureType greek
and not CultureType middle_eastern
and not FactionType slave
and not IsFactionHeir
and not IsFactionLeader
and Trait CharacterCampaigns = 1
and Trait Title_Heraldry = 1
and not FactionType slave
Affects Title_Heraldry 1 Chance 100
Comment out all of the triggers which use PostBattle. If there are nobles involved in the battle then it could be a trait triggered by the death, or becoming heir, or king.
But I still think you need to check out this:
Code:
15:21:16.687 [system.io] [info] exists: missing mods/Call_of_Warhammer/data/ui/generic/eventpics/militaryenemydisband.tga
15:21:16.701 [system.io] [info] exists: found mods/Call_of_Warhammer/data/ui/southern_european/eventpics/militaryenemydisband.tga (from: D:\Shpilevo\Medieval II)
15:21:16.701 [system.io] [info] exists: missing mods/Call_of_Warhammer/data/ui/southern_european/eventpics/militaryenemydisband.tga.dds
15:21:16.702 [system.io] [info] exists: found mods/Call_of_Warhammer/data/ui/southern_european/eventpics/militaryenemydisband.tga (from: D:\Shpilevo\Medieval II)
15:21:16.702 [system.io] [trace] file open,,16FD9D50,268668
15:21:16.702 [system.io] [info] open: found mods/Call_of_Warhammer/data/ui/southern_european/eventpics/militaryenemydisband.tga (from: D:\Shpilevo\Medieval II)
Check if militaryenemydisband is a historic event, and then if so make sure that it is set up correctly.
Then check if to see if it's fired by a script. And then if so, check the script which is firing to make sure that the script cannot conflict with anything. Like perhaps the script doesn't expect 2 armies at the same time and it tries to launch 2 historic events at the same time and CTDs.
I'm now guessing you have a script which disbands an army when it is defeated. But this script conflicts with itself when it tries to fire 2 historic events (2 of the same event) at once. Wild guess