Thank you, very good! Handsomely!!!

the rectangle is written «NicheCurvedBack», where did you get it?

Svetlana,
Please donot use this tip, it is too complicated.

use the first one:

- make a curved wall
- place 3 "invisible box" to position (height from floor etc) and size you need
- check in 3D-view everything looks good
- apply your textures for the wall (last chance)

- select this wall AND the "inv. Box"es
- use "copy as new furniture" menu (-> plugin!) to MAKE the new wall
- open a new project, "Edit/Paste" the new Wall into it
- check (again) in 3D-view everything looks good
- Export 3D-View as obj (Menu) to
create your (final) Wall!
-Import that wall into your project! Done [:)]

Please note:
Changing color of the Wall isn't a problem; changing texture certainly is!

macfrog