When exporting a sprite (via Tools, Sprites, Export) the game (Pokemon Emerald GBA) crashes, but not the program. I managed to do a quick fix myself by commenting out an interrupter, but I guess a real fix would actually be to resume the interrupt? Anyway this is my diff that got it to work.
After some more looking around it turns out it just pauses the game, not crashes. And doesn't resume after extraction. I presume it's paused to make sure the sprite in memory isn't altered during extraction?
It's a bit counter intuitive to have the game stay paused after extraction, I think it should resume automatically.