My latest test about WorldShadows():
Samuel wrote:
That could be causing the internal 16 bit vertex/index buffers to be out of bounds when stencil shadows are enabled.
So I did some tests with an old project of me ...
I used only one part of it, see red circle (elipse)

Image created with a CAD program ...
As I like to make a "walk through" for my projects I wanted to use OGRE3D.
But even one part of it is to much to use the WorldShadows() and PB quits the program.
Now with this smaller test program, I get the error message on the screen,

PS: without WorldShadows() it works good.
marc