THIS SHOULD BE A STICKY!!!
There seems to be a issue with the new skins. My game was crashing and I was getting that Unreal Engine Fatal Error! ( UE4 Fatal Error! ). So here is the fix I found out about and it worked for me!
- Goto Settings
- Goto Gameplay
- I_n the list select Halo 3_
- then Turn Off / Disable NEW SKINS
- Save your setting and reboot game.
As soon as I did that my game never crashed and never got the that UE4 Fatal Error again!
Hope that helps!