Renderer: Ray-traced 3D - doesn´t work

MacPro 10.8.2 After Effects CS6 11.0.0.378 CUDA 5.0.37

Hi,

I have a problem whith raytrace 3D renderer...

3D form/ Objects rendered with raytraced 3d worked without any problems the last month.

But now when I switch a layer into a 3d layer i cant´t see it any more.. please check out example

[img]http://up.picr.de/13654216rm.jpg[/img]

but when I change the preview to "fast layout" i can see the 3D Layers..please have look to the example again

[img]http://up.picr.de/13654464ff.jpg[/img]

I don´t know what I have changed?! Maybe it happend when I updated to CUDA 5. ??

I tried to updated back to 4.. but its not working I also installed AE new ..but no change!

thanks for any help, Jakob