Thank you Aethestode for the update, but can you please help me out with my bug? Because I can't continue on the story because of it.
"When you are on your firsts steps into the Orange archipelago, you beat mewtwo and then get professor Ivy to the nurse joy and you get a starter pokemon.
After that, I saw on Youtube that you need to go back to the 2nd floor of the Pokemon center to meet with Delia, but my bug is that Delia is on the 1st floor staring at the big machine. And when I talk to her, she tries to battle me whilst ALL my pokemon are dead."