Turns out that the older iDVD themes aren’t compatible with the new iDVD and since I had every version of iDVD it was causing iDVD to just show a splash screen an then shutdown. In order to fix the issue you need to clear out the old themes and then trash an application support folder in your user directory.
Step 1) Delete all old themes. Themes are located in your system’s library folder-
/Library/Application Support/iDVD/Themes
Only theme folders iDVD 1, iDVD 2, and iDVD 4 need to be deleted.
Step 2) Delete the ‘Installed Themes’ directory here,
username/library/application support/idvd
Step 3) Start iDVD.
