Originally Posted by Kloppstock
this player have no shadow at all
That isn't exactly right. In this video Manny doesn't have a shadow in the corridor outside his office, and he should, but he does in his office and in the garage. The LucasHacks article on available commands for fiddling with GF does not list one for turning off shadows, so that's what I'm going by. And I suspect that the guy who made that video did nothing to turn off the shadow in the corridor, because why turn if off for the corridor part and back on in the garage? More than likely it's something that just happened. I've had shadow weirdness myself. Usually it's black but sometimes it has irregular flickering.