I tried Max6 (mostly the jitter part) in a windows 7 OS (in a machine with a i7 975 and Geforce GTX295) and the only thing I noticed is that the jit.gl.material, when double clicked, doesn't show the "torus" shapes in the window below the parameters. And not all the parameters are working.
Hi benoit, please post your system details. There's no way to help without Max version, OS, graphics card etc. In Max6 there's Options > OpenGL Status to give you more info to send us. Also, please fill out bug reports at