Hi LOTK, All CTDs in RM can be classified into three categories.
1. Game CTDed for any reason. Then the latest saving crash when the loading bar is completed. I can not save this 'dead save file'. Thus, the latest good save-file need to be loaded. Hopefully you have one. However, in my experience, game will be CTDed soon after loading the good save-file. Normally within four turns. Thus it is better to save as many as possible after loading the good saving file. Then we can identify the exacting CTD time and reason using 'toggle_fow' method.
2. CTD in AI turn. Just use the method. works 100% for me for now.
3. CTD after attacking/ attacked by a 'weird' army. In my under-going campaign, one of Spanish army has ZERO number of soliders. In the battlefield, it shows 30 chivalries. Then CTD after I won this battle. I didn't try if 'toggle_fow' method works for this kind of error. I just leave those kind of "ghost" armies as far as possible.
Again, Great Mod. Thanks LOTK. Just keep on your great work.