Preset broken

Hello,

I had downloaded one of the early versions, and there were no presets available. So, I created some with the unfortunate idea of using the same presets you have always included in your application for years. Later, you updated the app, and your presets were available again. Since then, I can't open the application because it detects a duplicate preset. I tried deleting the presets in the "application content." Please help me.