32.pauls:

I still think it's a memory problem, caused by the size of your model or the textures it uses. Several things you could try:
1 - reduce the number of textures
2 - reduce the size of the textures, especially if they are bigger than 1000x1000 pixels
3 - reduce overall model size
4 - allow SH3D to use more memory: read this thread. Try 1048 first, before you go higher. It seems too much memory can cause problems as well.
5 - make sure your memory is cleared; if necessary restart your computer before you try a large render.

Hans