Hi Evgeny,
Really fast response, impressive! Well done!
Using the workaround is fine. But as a user, I hope all of the effects made by blender will be supported in B4W.
I like B4W, believe you will make it better!
Thanks again for the fast response!

Hi Evgeny,
Fast reply, amazing! Thanks!
I was using Blender 2.71 and Addon 14.09 (Mac OS 10.10), and the errors occured. So I updated to the lasted version, and the errors remain. I will send you the blend file later, FYI.
Another experiment: In order to figure out the problem, I tried using only one sphere and add some texture, then the error occured, either exporting error or runtime error.
Ps, I tried the demos in the SDK, all works well. Really wired. Waiting for your help!

A lot of errors when running the exported html. My question is that is B4W ready for production?
Below is the error msgs (Version: Blender v2.72b, Addon 14.10):
B4W warning: texture "water" has unsupported type "CLOUDS"
B4W warning: texture "Texture.002" has unsupported type "STUCCI"
B4W warning: texture "Texture.000" has unsupported type "CLOUDS"
B4W Warning: material "Material.001" is not assigned to any face (object "Plane.002").
B4W Warning: Mesh "Circle" has no faces (object "Circle").
B4W warning: depth-only issue was found
B4W warning: using NPOT-texture ../texture/grass/grass3.jpg
B4W warning: using NPOT-texture ../texture/stone/hrt_stone_07.jpg
B4W warning: using NPOT-texture ../texture/stone/hrt_stone_14.jpg
Uncaught TypeError: Cannot read property 'offset' of undefined