Decals staying pitch black.

So, i got this strange problem, after building my light it seems i only am left with some decals staying pitch black, i tried removing lights near them or adding lights, checking its properties and comparing them to the ones that work. Nothing seems to work. I checked my light color in my main light, its not set to black!



Anyone know how to fix this?



Example of a decal looking pitch black:



http://ift.tt/1BvN9bs