How to fix unknown cook failure - S_LightError

Hi there,

I’ve had unknown cook failures before. I can usually fix them by deleting save, intermediate and config folder or by fixing a broken blueprint. In this instance I haven’t had any luck. The log file hints at S_LightError but I’m not sure what this means and haven’t been unable to find my own answers. Any help would be greatly appreciated.

Thanks,

Please see attached log file