I have answered my own question about the first leaves problem I posted. It was indeed an issue with the Alpha map I was using. The Alpha map was a gray scale image. After changing it to a fully black image the transparent areas went away. I will post an updated example file when I have time.
Edit: I have updated the example file that uses separate Diffuse and Alpha mask.
The problem with the single image with both Diffuse and Alpha remains.
Thanks,
oort
Edit: I have updated the example file that uses separate Diffuse and Alpha mask.
The problem with the single image with both Diffuse and Alpha remains.
Thanks,
oort