Not sure off-hand, you may also try this work-around I found at MC site: ________________________________ Ray Dream Studio, Mac Why does Ray Dream crash on launch on the Macintosh? This is an error in two extension files for Ray Dream being corrupted. You can lock these files after a clean install to solve this problem: 1) Completely remove the Ray Dream 3D/Ray Dream Studio folder. 2) Reinstall Ray Dream. 3) BEFORE launching the app, open the Ray Dream Studio Folder, then the Ray Dream Extensions folder. Lock these two files: CVMDATA CVMDATA DATA