Im trying to apply materials with a transparent background using the png format but when I try to render them in Yafaray it crashes blender but when using the internal blender engine it works ok but the shadow shows the plane that I have drawn and not the material. any suggestions?
I quit using yafray because it did not support PNG files. I would think they would have added that in yafaray, but you may want to try another format like TGA or TIFF.