Hello all. While making a brush with the entity 'func_precipitation', I noticed the precipitation type "Ash". It is suppose to be ash falling from the sky and I was thinking it would be a nice touch for atmosphere to put it in certain areas of the map. Sadly, after compiling the map, the ash particles falling from the sky were black/pink checkerboard squares. I imagine this is because the ash is meant for HL2 and not TF2 and therefore was not working. Could someone telling me how to make it work properly in TF2 if possible? Thank you.