The only AR codes I've not had crash the game on my R4 is 100% catch, experience & money multiplication, and the event codes. Any of the item code tend to lock everything up. Also with the shiny code, if you have a partner and a pair of wild shinies show up the game friezes.
Mind uploading your .sav file? I'd say that's not against the rules since you need the game to play it and your not supplying the game, and I'll test it with whatever patch you want me to and on both an emulator and my DS itself.