Just saw this. So the problem was caused by a broken shader! As squad didn't seem to fix this issue, I implemented the fix for the next update in KIS You can thanks mongoose! - - - Updated - - - Removing the helmet with KIS disable light and flares. If you use TextureReplacer, only the flare are disabled (I didn't change the way TextureReplacer work). For KIS it's a design choice, without helmet the headlamp cannot work. Hopefully a flashlight will be available later