Try this basic troubleshooting fix :
1 - delete the IDVD preference file, com.apple.iDVD.plist, that resides in your
2 - delete IDVD'S cache file, Cache.db, that is located in your
Click to view full size
3 - launch IDVD and try again.
Thanks for the suggestions. I deleted those items. This helped at first as iDVD doesn't crash anymore when starting up. However, when opening my old archived project the problem starts again. It crashes. I think the archive file was created before installing iLife '11. Also when I tried creating a new project, iDVD crashed after the prompt to save it. Guess I've more work to do.