Ensure your game version is exactly V1.3.1-E . Using an mismatched trainer can cause the game to crash.
The V1.3.1 trainer was coded for Windows XP/Vista. On Windows 10/11, you may need to run the game and trainer in . Also, disable "Fullscreen Optimizations" for the game .exe. Stronghold Crusader Extreme V1 3.1 E Trainer