Destroy your save file on Pokémon heartgold/soulsilver(untested)
Posted by: fivex
Date: 2009-09-25 23:39:22
If you close your DS after exiting the battle recorder screen menu without finishing watching the battle until end and not waiting for the next screen to be appeared,your save file will be crashed and you will not be able to recover again.
I… realy don't want to test this.