well, i don't know much about your setup, but the top of the call stack is BSLightingShaderPropertyFloatController, which is apparently a creation engine function to manage UV Texture lights? it appears to be trying to work out the lighting on whatever model is on Form ID FF01239A or FF012398. you might load a game and prid that form id and see what you can see about that actor (?) and why it's choking trying to manage flare lights on WeaponMagazineChild3.
maybe update graphics drivers and remove anything that messes with the lighting engine? any glowing textures on weapon mods that might be suspect?