Radiance,
it is written in my previous messg, I have XQuartz installed and reinstalled...

No way, intalled, reintalled in a different order (driver after the toolkit) intallled and reintalled XQuartz, but Octane don't even lauchs, and the crash report says:
Dyld Error Message:
Library not loaded: /usr/X11/lib/libglut.3.dylib
Referenced from: /Applications/OctaneRender 1.022 beta2.2 ...

Radience,
even using Snow Leo?

SurfingAlien,
you are right, I'm with 10.6.4, and the latest nVidia drivers, 3.1.10, here is crash report:

No, I'm running 10.6.8 in all machines...

No way to run Octane here, tryed in two Mac Pros, both with nVidia 8800, intalled latest drivers, toolkit, software just don't launch, keep crashing and asking for libglut.3.dylib...