Pokemon XD and AR/Gecko Codes

Was Pokemon XD: Gale of Darkness put together with strings? The game breaks so easily if you input even a single code. I'm just trying to do an all female run with a code to make all event, Shadow, and Wild mons female (if applicable), but the minute I enter a cutscene or exit a menu, it crashes with the high-pitched whine.

"Yes we are"