in the jit.gl.shader helpfile, selecting either of the first two shaders in the "vertdisplace" category crashes max immediately everytime, whereas the third gives this error:

• error: jit.gl.shader: CG framework failed to load -- unable to use CG shader programs! • error: jit.gl.shader: unable to load program! • error: jit.gl.shader: unable to find usable language implementation. • error: jit.gl.shader: error loading shader!