AutoCAD Isometrics WS

[#1]

I have captured a set of photos about 31 pics from all angles of a square stool, but when I try to submit to 123DCatch, it just says the application unable to create your Photo Scence because  not enough images could be stitched together.In fact, I check that none of image be stitched. I have captured 31pics from all angles and from buttom to top. There is two of my images. Can you tell me what's the problem in that? In addition, I found even the demo images which are provided by autodesk can't  create Photo Scence. I am confused.

[#2]

The shiny surfaces of the plastic make it so that 123D Catch will not work.