Script 'SpriteWindow' line 220: RuntimeError occurred. Filename is nil. bug

So I was playing Insurgence (on an egglocke) and I closed it down for a while, when It started I pressed the enter and it shut down and on the screen it came up; Script 'SpriteWindow' line 220: RuntimeError occurred. filename is nil How do I fix this please because I can't play the game anymore. thx