I'm also experiencing lock ups with the newest version of the roster. Version Beta 0.1.9 runs just fine. Version 0.2.1 locks my game up. I first noticed this when running pitching drills. When the drill finished and attempted to save, the game locked up. When 0.2.1 was set a default roster, the game would lock up on start up. Again I have none of these issues with 0.1.9. I hope this helps.