My Delta Pawniard (Hatched from egglocke) Can't Learn Any Moves, Or Else My Game Fails

Ok, so I hatched a delta Pawniard from my egglocke. But I tried to teach it pound, and my game crashed. This happened with delta squirtle, too. I tried teaching it shadow claw, and my game crashed. It says the move I'm replacing is X-Scissor, but I cannot use it in battle.