I called support and was told to change which version of my video card to select when creating a new project. I changed it from the "Mercury Playback Engine GPU Acceleration" to the "Software only" setting when making the choice under "General: Video Rendering and Playback." Apparently, my Windows 7 Professional machine's graphics card causes a problem for Premeire Pro so, it has to be selected this way. However, this morning, my son ran into the same problem. we reset the selection but, still get the freeze and crash. Help?