[OVERTURE] Weird brightness effect given by turning on flashlight/glowstick

[Toshi0]

I just bought this game, and I recently installed the 1.1 patch, because of the missing textures. After I installed it, though, when I had turned on my flashlight, the area around me got bright. Really bright. In fact, after I turned it on, every object was white. I could barely see the textures, but I could still see where I was in-game. Same effect with the glowstick, but a greener effect. What can I do to fix this?

EDIT: Also, when I crouch to hide, it gives off the same effect but it's blue.