Hi I'm using Vue 4.22-02 on a G4 DP 867 MHz 1.75 GB Ram running OS 10.3.3 and have no problems with it. No problems with either of my graphics cards either (GeForce4 MX AGP, ATI Radeon 7000 PCI) and have even rendered across both monitors. I have all the Gl options unchecked and the Enable Background Draw Thread unchecked. wander