Thank you ClawShrimp.

Thank you ArtPearl for the information.

I am sorry. 
The third button ( which shifted to right hand side ) was closed ( I did not change it).

Also, in my case, when I opened all buttons (without changing them back to 0 in step2),
 it was working nicely as shown in
http://www.renderosity.com/mod/gallery/index.php?image_id=1461541

It is strange ?