Thank you so much Konstantin Khomyakov, can you tell what I can do about it?? I need the transparency node to work. Is there another way???

Hi, Names Watson.

I have a problem with the cycles transparency BSDF Node, I am using the B4W 17.10 and this version supports some of the cycle nodes and one of them is the transparency BSDF. But recently I am encountered a problem where in the Viewport Shading rendered mode the transparency is working fine a good preview.


But when fastpreview the transparency is gone


This is my node structure for this effect.


Can you help me out with this problem!! I am also attaching the blender file related to the problem below. Hope to hear soon!!
Tut2.zip