Crashes when ever I interact with any troop data

I have an issue where I cannot create new or edit existing troops with out the engine freezing and subsequently crashing

It doesn't seem to happen in new projects, so it seems like something in your project is making it crash for some reasons, but with these information I can't figure it out. If you want me to check it, you can send me your project datas (Yourproject/resources/app/Content folder) to support@rpg-paper-maker.com, or you can directly share it there.