I am having problems with my copy of iDVD6 on a new iMac. The app is failing to process the audio element of some films made in iMovie. This appears to be films which have imported audio files [via iTunes], ie the audio files in question are on the hard drive. These are film files which the app successfully processes until a month or so ago (ie not new material).
I am mystified as to what might be causing this: do you have any thoughts?