Ok heres is the material editor. And the scene above i had no light.
Looking at your material settings there, I would suggest that it is more likely to be an issue with your actual texture. The materials look to be set up fine...
You could try converting your png to greyscale and saving it as another file (tiff, png whatever...) and placing this greyscale image in your opacity map...For some reason it appears that your opacity is not applying correcting in the current setup...
Personally, I use a plugin called ky_trail which creates some excellent weapons fire effects that are highly customizable...You can see the results of it in my latest pic in the 3D Gallery...
Posts
Looking at your material settings there, I would suggest that it is more likely to be an issue with your actual texture. The materials look to be set up fine...
You could try converting your png to greyscale and saving it as another file (tiff, png whatever...) and placing this greyscale image in your opacity map...For some reason it appears that your opacity is not applying correcting in the current setup...
Personally, I use a plugin called ky_trail which creates some excellent weapons fire effects that are highly customizable...You can see the results of it in my latest pic in the 3D Gallery...