6.4 - CTD upon engaging AI reinforcements

[Rize]

I am playing 6.4 with HaHawk's native voices mod adapted to SS by myself, plus RBAI 5.7, which I installed recently in hopes of fixing this issue.

This CTD only happens in 50% of battles with reinforcements, but when it does happen, it is recurring for those battles, forcing me to avoid them. The game crashes the moment I begin shooting the reinforcing army.

This problem is especially annoying since I am playing the Cumans, and conquering settlements with my cavalry-only armies involves battles with AI reinforcements 97% of the time. So far, avoiding battles with CTDs has forced me to delay taking settlements 5 times, auto-resolve against a byzantine stack with 3 scholarii when I could have fought them in mountainous terrain two times, and significantly slowed my expansion.

After frantically searching for a solution, I thought I found one. I installed Germanicu5's RBAI 5.7 and enabled it from the setup. It didn't work.
I then enabled the emergency battle ctd fix, and it actually let me get through 3 battles with ctds! However, I said yes to the uninstall prompt after the end-turn, and then disabled the fix as was suggested.

It didn't take long before I ran into crashy battles again, and now I can't get the fix to work! I tried re-enabling it as well as RBAI, and also re-installing RBAI, but to no avail. Anyway, I would like a more permanent solution.

Here's the last few lines in my system log with trace enabled for my last crash in such a battle.

Spoiler Alert, click show to read: 

13:18:08.085 [system.io] [info] open:   found data/ui/eastern_european/eventpics/battle_generaldeathenemy.tga (from: packs/data_2.pack)13:18:08.105 [system.io] [trace] pack close,,data/ui/eastern_european/eventpics/battle_generaldeathenemy.tga,,,-217308
13:18:58.541 [system.io] [trace] file open,,mods/SS6.3/data/ui/units/cumans/#cum_druz_bek_cav_a_sw.tga,12332
13:18:58.541 [system.io] [info] open:   found mods/SS6.3/data/ui/units/cumans/#cum_druz_bek_cav_a_sw.tga (from: C:\Games\Medieval II - Total War)
13:18:58.542 [system.io] [trace] file open,,mods/SS6.3/data/ui/units/mercs/#cum_yas_cav_a_sw.tga,12332
13:18:58.542 [system.io] [info] open:   found mods/SS6.3/data/ui/units/mercs/#cum_yas_cav_a_sw.tga (from: C:\Games\Medieval II - Total War)
13:18:58.543 [system.io] [trace] file open,,mods/SS6.3/data/ui/units/cumans/#cum_druz_bek_cav_a_sw.tga,12332
13:18:58.543 [system.io] [info] open:   found mods/SS6.3/data/ui/units/cumans/#cum_druz_bek_cav_a_sw.tga (from: C:\Games\Medieval II - Total War)
13:18:58.543 [system.io] [trace] file open,,mods/SS6.3/data/ui/units/mercs/#cum_yas_cav_a_sw.tga,12332
13:18:58.544 [system.io] [info] open:   found mods/SS6.3/data/ui/units/mercs/#cum_yas_cav_a_sw.tga (from: C:\Games\Medieval II - Total War)
13:18:58.544 [system.io] [trace] file open,,mods/SS6.3/data/ui/units/cumans/#cum_druz_bek_cav_a_sw.tga,12332
13:18:58.544 [system.io] [info] open:   found mods/SS6.3/data/ui/units/cumans/#cum_druz_bek_cav_a_sw.tga (from: C:\Games\Medieval II - Total War)
13:18:58.545 [system.io] [trace] file open,,mods/SS6.3/data/ui/units/mercs/#cum_yas_cav_a_sw.tga,12332
13:18:58.545 [system.io] [info] open:   found mods/SS6.3/data/ui/units/mercs/#cum_yas_cav_a_sw.tga (from: C:\Games\Medieval II - Total War)
13:18:58.546 [system.io] [trace] file open,,mods/SS6.3/data/ui/units/cumans/#cum_druz_bek_cav_a_sw.tga,12332
13:18:58.546 [system.io] [info] open:   found mods/SS6.3/data/ui/units/cumans/#cum_druz_bek_cav_a_sw.tga (from: C:\Games\Medieval II - Total War)
13:18:58.546 [system.io] [trace] file open,,mods/SS6.3/data/ui/units/mercs/#cum_yas_cav_a_sw.tga,12332
13:18:58.546 [system.io] [info] open:   found mods/SS6.3/data/ui/units/mercs/#cum_yas_cav_a_sw.tga (from: C:\Games\Medieval II - Total War)
13:18:58.547 [system.io] [trace] file open,,mods/SS6.3/data/ui/units/mercs/#cum_yas_cav_a_sw.tga,12332
13:18:58.547 [system.io] [info] open:   found mods/SS6.3/data/ui/units/mercs/#cum_yas_cav_a_sw.tga (from: C:\Games\Medieval II - Total War)
13:18:58.548 [system.io] [trace] file open,,mods/SS6.3/data/ui/units/cumans/#cum_druz_bek_cav_a_sw.tga,12332
13:18:58.548 [system.io] [info] open:   found mods/SS6.3/data/ui/units/cumans/#cum_druz_bek_cav_a_sw.tga (from: C:\Games\Medieval II - Total War)
13:18:58.549 [system.io] [trace] file open,,mods/SS6.3/data/ui/units/mercs/#cum_yas_cav_a_sw.tga,12332
13:18:58.549 [system.io] [info] open:   found mods/SS6.3/data/ui/units/mercs/#cum_yas_cav_a_sw.tga (from: C:\Games\Medieval II - Total War)
13:18:58.551 [system.io] [trace] file open,,mods/SS6.3/data/ui/units/cumans/#cum_druz_bek_cav_a_sw.tga,12332
13:18:58.551 [system.io] [info] open:   found mods/SS6.3/data/ui/units/cumans/#cum_druz_bek_cav_a_sw.tga (from: C:\Games\Medieval II - Total War)
13:18:58.552 [system.io] [trace] file open,,mods/SS6.3/data/ui/units/mercs/#cum_yas_cav_a_sw.tga,12332
13:18:58.552 [system.io] [info] open:   found mods/SS6.3/data/ui/units/mercs/#cum_yas_cav_a_sw.tga (from: C:\Games\Medieval II - Total War)
13:19:01.435 [system.io] [trace] file open,,mods/SS6.3/data/ui/units/cumans/#cum_druz_bek_cav_a_sw.tga,12332
13:19:01.435 [system.io] [info] open:   found mods/SS6.3/data/ui/units/cumans/#cum_druz_bek_cav_a_sw.tga (from: C:\Games\Medieval II - Total War)
13:19:01.436 [system.io] [trace] file open,,mods/SS6.3/data/ui/units/mercs/#cum_yas_cav_a_sw.tga,12332
13:19:01.436 [system.io] [info] open:   found mods/SS6.3/data/ui/units/mercs/#cum_yas_cav_a_sw.tga (from: C:\Games\Medieval II - Total War)
13:19:01.437 [system.io] [trace] file open,,mods/SS6.3/data/ui/units/cumans/#cum_druz_bek_cav_a_sw.tga,12332
13:19:01.437 [system.io] [info] open:   found mods/SS6.3/data/ui/units/cumans/#cum_druz_bek_cav_a_sw.tga (from: C:\Games\Medieval II - Total War)
13:19:01.437 [system.io] [trace] file open,,mods/SS6.3/data/ui/units/mercs/#cum_yas_cav_a_sw.tga,12332
13:19:01.438 [system.io] [info] open:   found mods/SS6.3/data/ui/units/mercs/#cum_yas_cav_a_sw.tga (from: C:\Games\Medieval II - Total War)
13:19:01.438 [system.io] [trace] file open,,mods/SS6.3/data/ui/units/cumans/#cum_druz_bek_cav_a_sw.tga,12332
13:19:01.438 [system.io] [info] open:   found mods/SS6.3/data/ui/units/cumans/#cum_druz_bek_cav_a_sw.tga (from: C:\Games\Medieval II - Total War)
13:19:01.439 [system.io] [trace] file open,,mods/SS6.3/data/ui/units/mercs/#cum_yas_cav_a_sw.tga,12332
13:19:01.439 [system.io] [info] open:   found mods/SS6.3/data/ui/units/mercs/#cum_yas_cav_a_sw.tga (from: C:\Games\Medieval II - Total War)
13:19:01.440 [system.io] [trace] file open,,mods/SS6.3/data/ui/units/cumans/#cum_druz_bek_cav_a_sw.tga,12332
13:19:01.440 [system.io] [info] open:   found mods/SS6.3/data/ui/units/cumans/#cum_druz_bek_cav_a_sw.tga (from: C:\Games\Medieval II - Total War)
13:19:01.440 [system.io] [trace] file open,,mods/SS6.3/data/ui/units/mercs/#cum_yas_cav_a_sw.tga,12332
13:19:01.441 [system.io] [info] open:   found mods/SS6.3/data/ui/units/mercs/#cum_yas_cav_a_sw.tga (from: C:\Games\Medieval II - Total War)
13:19:01.441 [system.io] [trace] file open,,mods/SS6.3/data/ui/units/cumans/#cum_druz_bek_cav_a_sw.tga,12332
13:19:01.441 [system.io] [info] open:   found mods/SS6.3/data/ui/units/cumans/#cum_druz_bek_cav_a_sw.tga (from: C:\Games\Medieval II - Total War)
13:19:01.442 [system.io] [trace] file open,,mods/SS6.3/data/ui/units/mercs/#cum_yas_cav_a_sw.tga,12332
13:19:01.442 [system.io] [info] open:   found mods/SS6.3/data/ui/units/mercs/#cum_yas_cav_a_sw.tga (from: C:\Games\Medieval II - Total War)
13:19:01.442 [system.io] [trace] file open,,mods/SS6.3/data/ui/units/cumans/#cum_druz_bek_cav_a_sw.tga,12332
13:19:01.442 [system.io] [info] open:   found mods/SS6.3/data/ui/units/cumans/#cum_druz_bek_cav_a_sw.tga (from: C:\Games\Medieval II - Total War)
13:19:01.443 [system.io] [trace] file open,,mods/SS6.3/data/ui/units/mercs/#cum_yas_cav_a_sw.tga,12332
13:19:01.443 [system.io] [info] open:   found mods/SS6.3/data/ui/units/mercs/#cum_yas_cav_a_sw.tga (from: C:\Games\Medieval II - Total War)
13:19:01.444 [system.io] [trace] file open,,mods/SS6.3/data/ui/units/cumans/#cum_druz_bek_cav_a_sw.tga,12332
13:19:01.444 [system.io] [info] open:   found mods/SS6.3/data/ui/units/cumans/#cum_druz_bek_cav_a_sw.tga (from: C:\Games\Medieval II - Total War)
13:19:01.444 [system.io] [trace] file open,,mods/SS6.3/data/ui/units/mercs/#cum_yas_cav_a_sw.tga,12332
13:19:01.445 [system.io] [info] open:   found mods/SS6.3/data/ui/units/mercs/#cum_yas_cav_a_sw.tga (from: C:\Games\Medieval II - Total War)
13:19:01.445 [system.io] [trace] file open,,mods/SS6.3/data/ui/units/cumans/#cum_druz_bek_cav_a_sw.tga,12332
13:19:01.445 [system.io] [info] open:   found mods/SS6.3/data/ui/units/cumans/#cum_druz_bek_cav_a_sw.tga (from: C:\Games\Medieval II - Total War)
13:19:01.446 [system.io] [trace] file open,,mods/SS6.3/data/ui/units/mercs/#cum_yas_cav_a_sw.tga,12332
13:19:01.446 [system.io] [info] open:   found mods/SS6.3/data/ui/units/mercs/#cum_yas_cav_a_sw.tga (from: C:\Games\Medieval II - Total War)
13:19:02.161 [system.rpt] [error] Medieval 2: Total War encountered an unspecified error and will now exit.

I can't see anything odd in it. Before I enabled trace, the system log said something along the lines of "label_unit referenced non-existent unit" a bunch of times before crashing.

[Riva]

Did you try to install the 6.4 bugfix compilation ? The emergency battle CTD fix should only be used in certain cases and immediately disabled after resolving the crash occuring in a single battle. Also note, that any reinforcement unit that enters the battle field on inaccessible terrain (such as on mountains) will crash the game and there is no mod or fix that could resolve that.

[Rize]

I didn't install the compilation. It was probably a bad idea, but from what I've seen in its description, their fix for my problem is RBAI, which I've already tried out.
I will definitely try it when I start another campaign, but since it's not savegame compatible, even if it solved my problem, I would lose weeks of gameplay.

It seems that disabling RBAI, charging headlong into a crash, then enabling it again makes it possible for me to get past one crashy battle at a time, so I will make do with that if there is no other solution.

Slaughtering more lambs and making the enemy gain more widows will have to remain suspenseful...