It works at last!
Thanks for the support.

I try to upload the model files again....

Right, I got two GT 120 cards.
The fun did not last for long. It works fine with the demo files, but it still crash during loading when I try my own files exported from formZ. I have tried a few export options but not all combinations. I have enclosed one of my exported files.

screendump 6 shows the default device manager. The active Cuda Device shows nothing. I changed that to one of the two available graphic cards on the computer (screendump 7). And it works!

Thanks for the support. I will play around and get back to you.

This is the closest I come to device manager (in the Mac OS). Is this what you want?

This is how far I come (se enclosed screendump). When I click on the note, Octane just quit without any error message.

This is pasted from the consol log:

20.05.10 17.35.29 octane[462] invalid drawable
20.05.10 17.35.29 [0x0-0x34034].org.refractivesoftware.octanerender[462] Cuda error in file ...

I have downloaded and tried all the demo files. All of them successfully load into Octane, but it crash immediate when I click on the node.

Sorry - the system info gave me the version 1.1.0.
I see from the download files that I have installed cuda driver 3.0.14 and cuda toolkit 3.0

OctaneRender load successfully, but consequently crash when adding an obj file, or immediate after when cliching on the node.
Any suggestions?
I am running Mac OS 10.6.2 on a duel quadcore Xeon 2.26 GHz, 12 GB, duel GeForce GT 120, 512 MB.
KUDA v 1.1.0
GeForce v 1.6.6