If DVD Studio Pro isn't starting up properly or performing normally, try these basic troubleshooting steps to remedy the situation. Please note that these steps aren't exhaustive and are not intended to cover any specific issue. They are fundamental, basic steps that are most effective in getting DVD Studio Pro into good working order, and are the steps most often suggested by AppleCare Technical Support. Confirm requirements and versions Check system requirements—Make sure that you haven't overlooked any hardware aspect that's required to use DVD Studio
Source >>