Yaaahoow... Another bug killed :twisted:

My GFX card doesn't seem to support 32bit Indexbuffers. That's the reason why D3D acted weird.
I didn't know that some GFX cards didn't support 32bit Indices. That's also the reason why it worked on your PC. You just have a better Videocard.

I never ran into such a "hardware-limitation" bug, but i think its a good lesson for me :razz:

BTW: I still like to know the answers of the above questions about D3D debugging