Double KO problems?
If you think your game is glitched by having two of your Pokemon KO'd at the same turn and you can't switch any of your Pokemon in battle, you need to switch your active Pokemon with the Fainted Pokemon. After you have placed the two active Pokemon in the first two slots, the battle goes on. And I repeat this is NOT a glitch.
I hope this helps you if you're having issues with Double or Triple Battles.