I just finished rendering this scean.. it looks fine and all but for one thing.. behind each animal.. I have a dust cloud trailing behind.. but the prob is.. it don't show up at all! O.o -every- cloud, smoke, fog mat I add onto the semestrial lattice (that forms the shape of the dust cloud) don't display at all.. it's like it's not even there.. I even messed with all the settings for the mats and such.. but nothing I do makes them show up. I've tried adding the mats to spheres and such.. but I get the same thing, it just will not display at all. I'm using the "Heavy Pollution" mat as it was the right color and form for what I wanted... but nothing I do will make it show up.. Even setting everything to max, removing the transparency, and the works.. and it still don't show. I've tested it using other soled mats.. and they show just fine with no tweeking.. I'd really like to finish this.. but these stupid dust clouds just refuse to show up what so ever. Can someone tell me whats going on? Is this a bug or something?