Hello! I'd recommend changing your game's rendering system to start. If that does not work for you, take a look in Feralheart\media\particles and look for any with repeating file names ending in _0, _1, and so on. Make sure to delete them, and then check to see if the game starts up without any issues. If that does not work for you, you could try uninstalling the game and then reinstalling, as recommended above.
